diff --git a/lean/commands/backtest.py b/lean/commands/backtest.py
index c56981c2..4899496e 100644
--- a/lean/commands/backtest.py
+++ b/lean/commands/backtest.py
@@ -17,9 +17,8 @@
 from pathlib import Path
 from typing import Optional
 import click
-
 from lean.click import LeanCommand, PathParameter
-from lean.constants import DEFAULT_ENGINE_IMAGE
+from lean.constants import DEFAULT_ENGINE_IMAGE, LEAN_ROOT_PATH
 from lean.container import container
 from lean.models.api import QCMinimalOrganization
 from lean.models.utils import DebuggingMethod
@@ -61,7 +60,7 @@ def _migrate_python_pycharm(project_dir: Path) -> None:
         library_dir = None
 
     for mapping in path_mappings.findall(".//mapping"):
-        if mapping.get("local-root") == "$PROJECT_DIR$" and mapping.get("remote-root") == "/Lean/Launcher/bin/Debug":
+        if mapping.get("local-root") == "$PROJECT_DIR$" and mapping.get("remote-root") == LEAN_ROOT_PATH:
             mapping.set("remote-root", "/LeanCLI")
             made_changes = True
 
@@ -108,7 +107,7 @@ def _migrate_python_vscode(project_dir: Path) -> None:
         library_dir = None
 
     for mapping in config["pathMappings"]:
-        if mapping["localRoot"] == "${workspaceFolder}" and mapping["remoteRoot"] == "/Lean/Launcher/bin/Debug":
+        if mapping["localRoot"] == "${workspaceFolder}" and mapping["remoteRoot"] == LEAN_ROOT_PATH:
             mapping["remoteRoot"] = "/LeanCLI"
             made_changes = True
 
diff --git a/lean/commands/cloud/backtest.py b/lean/commands/cloud/backtest.py
index ed7b3c31..75885d95 100644
--- a/lean/commands/cloud/backtest.py
+++ b/lean/commands/cloud/backtest.py
@@ -13,12 +13,11 @@
 
 import webbrowser
 from typing import Optional
-
 import click
-
 from lean.click import LeanCommand
 from lean.container import container
-
+from pathlib import Path
+from lean.models.errors import RequestFailedError
 
 @click.command(cls=LeanCommand)
 @click.argument("project", type=str)
@@ -43,7 +42,16 @@ def backtest(project: str, name: Optional[str], push: bool, open_browser: bool)
     logger = container.logger()
 
     cloud_project_manager = container.cloud_project_manager()
-    cloud_project = cloud_project_manager.get_cloud_project(project, push)
+    try:
+        cloud_project = cloud_project_manager.get_cloud_project(project, push)
+    except RuntimeError as e:
+        if cloud_project_manager._project_config_manager.try_get_project_config(Path.cwd() / project,
+                                                                        cloud_project_manager._path_manager):
+            error_message = f'No project with the given name or id "{project}" found in your cloud projects.'
+            error_message += f" Please use `lean cloud backtest --push {project}` to backtest in cloud."
+        else:
+            error_message = f'No project with the given name or id "{project}" found in your cloud or local projects.'
+        raise RuntimeError(error_message)
 
     if name is None:
         name = container.name_generator().generate_name()
diff --git a/lean/commands/init.py b/lean/commands/init.py
index fb198ec4..681ea604 100644
--- a/lean/commands/init.py
+++ b/lean/commands/init.py
@@ -112,6 +112,7 @@ def init() -> None:
     cli_config_manager = container.cli_config_manager()
     if cli_config_manager.default_language.get_value() is None:
         default_language = click.prompt("What should the default language for new projects be?",
+                                        default=cli_config_manager.default_language.default_value,
                                         type=click.Choice(cli_config_manager.default_language.allowed_values))
         cli_config_manager.default_language.set_value(default_language)
 
@@ -121,8 +122,8 @@ def init() -> None:
 - {DEFAULT_DATA_DIRECTORY_NAME}/ contains the data that is used when running the LEAN engine locally
 
 The following documentation pages may be useful:
-- Setting up local autocomplete: https://www.lean.io/docs/lean-cli/projects/autocomplete
-- Synchronizing projects with the cloud: https://www.lean.io/docs/lean-cli/projects/cloud-synchronization
+- Setting up local autocomplete: https://www.lean.io/docs/v2/lean-cli/projects/autocomplete
+- Synchronizing projects with the cloud: https://www.lean.io/docs/v2/lean-cli/projects/cloud-synchronization
 
 Here are some commands to get you going:
 - Run `lean create-project "My Project"` to create a new project with starter code
diff --git a/lean/commands/research.py b/lean/commands/research.py
index 75117594..288bb991 100644
--- a/lean/commands/research.py
+++ b/lean/commands/research.py
@@ -18,11 +18,12 @@
 from docker.errors import APIError
 from docker.types import Mount
 from lean.click import LeanCommand, PathParameter
-from lean.constants import DEFAULT_RESEARCH_IMAGE
+from lean.constants import DEFAULT_RESEARCH_IMAGE, LEAN_ROOT_PATH
 from lean.container import container
 from lean.models.data_providers import QuantConnectDataProvider, all_data_providers
 from lean.components.util.name_extraction import convert_to_class_name
 
+
 def _check_docker_output(chunk: str, port: int) -> None:
     """Checks the output of the Docker container and opens the browser if Jupyter Lab has started.
 
@@ -80,7 +81,7 @@ def research(project: Path,
 
     lean_config_manager = container.lean_config_manager()
     lean_config = lean_config_manager.get_complete_lean_config("backtesting", algorithm_file, None)
-    lean_config["composer-dll-directory"] = "/Lean/Launcher/bin/Debug"
+    lean_config["composer-dll-directory"] = LEAN_ROOT_PATH
     lean_config["research-object-store-name"] = algorithm_name
 
     if download_data:
@@ -103,7 +104,7 @@ def research(project: Path,
 
     # Mount the config in the notebooks directory as well
     local_config_path = next(m["Source"] for m in run_options["mounts"] if m["Target"].endswith("config.json"))
-    run_options["mounts"].append(Mount(target="/Lean/Launcher/bin/Debug/Notebooks/config.json",
+    run_options["mounts"].append(Mount(target=f"{LEAN_ROOT_PATH}/Notebooks/config.json",
                                        source=str(local_config_path),
                                        type="bind",
                                        read_only=True))
@@ -120,7 +121,7 @@ def research(project: Path,
 
     # Mount the project to the notebooks directory
     run_options["volumes"][str(project)] = {
-        "bind": "/Lean/Launcher/bin/Debug/Notebooks",
+        "bind": f"{LEAN_ROOT_PATH}/Notebooks",
         "mode": "rw"
     }
 
diff --git a/lean/components/api/api_client.py b/lean/components/api/api_client.py
index c3a02ec8..23ba3ec7 100644
--- a/lean/components/api/api_client.py
+++ b/lean/components/api/api_client.py
@@ -168,7 +168,8 @@ def _parse_response(self, response: requests.Response) -> Any:
         if "errors" in data and len(data["errors"]) > 0:
             if data["errors"][0].startswith("Hash doesn't match."):
                 raise AuthenticationError()
-
+            if data["errors"][0].startswith('UserID not valid'):
+                data["errors"].append('Please login to your account. https://www.quantconnect.com/docs/v2/lean-cli/api-reference/lean-login')
             raise RequestFailedError(response, "\n".join(data["errors"]))
 
         if "messages" in data and len(data["messages"]) > 0:
diff --git a/lean/components/cloud/cloud_project_manager.py b/lean/components/cloud/cloud_project_manager.py
index 8ce45b7f..0d1b9cac 100644
--- a/lean/components/cloud/cloud_project_manager.py
+++ b/lean/components/cloud/cloud_project_manager.py
@@ -57,9 +57,7 @@ def get_cloud_project(self, input: str, push: bool) -> QCProject:
         """
         # If the given input is a valid project directory, we try to use that project
         local_path = Path.cwd() / input
-        if self._path_manager.is_path_valid(local_path) \
-                and local_path.is_dir() \
-                and self._project_config_manager.get_project_config(local_path).file.exists():
+        if self._project_config_manager.try_get_project_config(local_path, self._path_manager):
             if push:
                 self._push_manager.push_projects([local_path])
 
diff --git a/lean/components/config/cli_config_manager.py b/lean/components/config/cli_config_manager.py
index 39f62229..d49e6426 100644
--- a/lean/components/config/cli_config_manager.py
+++ b/lean/components/config/cli_config_manager.py
@@ -43,7 +43,8 @@ def __init__(self, general_storage: Storage, credentials_storage: Storage) -> No
                                              "The default language used when creating new projects.",
                                              ["python", "csharp"],
                                              False,
-                                             general_storage)
+                                             general_storage,
+                                             "python")
 
         self.engine_image = Option("engine-image",
                                    f"The Docker image used when running the LEAN engine ({DEFAULT_ENGINE_IMAGE} if not set).",
diff --git a/lean/components/config/project_config_manager.py b/lean/components/config/project_config_manager.py
index 2a9ae7a1..e8b2bbaf 100644
--- a/lean/components/config/project_config_manager.py
+++ b/lean/components/config/project_config_manager.py
@@ -17,6 +17,7 @@
 
 from lean.components.config.storage import Storage
 from lean.components.util.xml_manager import XMLManager
+from lean.components.util.path_manager import PathManager
 from lean.constants import PROJECT_CONFIG_FILE_NAME
 from lean.models.utils import CSharpLibrary
 
@@ -31,6 +32,19 @@ def __init__(self, xml_manager: XMLManager) -> None:
         """
         self._xml_manager = xml_manager
 
+    def try_get_project_config(self, project_directory: Path, path_manager: PathManager) -> Storage:
+        """Returns a Storage instance to get/set the configuration for a project.
+
+        :param project_directory: the path to the project to retrieve the configuration of
+        :return: the Storage instance containing the project-specific configuration of the given project
+        """
+        if path_manager.is_path_valid(project_directory) \
+                and project_directory.is_dir() \
+                and self.get_project_config(project_directory).file.exists():
+            return Storage(str(project_directory / PROJECT_CONFIG_FILE_NAME))
+        else:
+            return False
+
     def get_project_config(self, project_directory: Path) -> Storage:
         """Returns a Storage instance to get/set the configuration for a project.
 
diff --git a/lean/components/docker/lean_runner.py b/lean/components/docker/lean_runner.py
index 24a901c6..efd4558b 100644
--- a/lean/components/docker/lean_runner.py
+++ b/lean/components/docker/lean_runner.py
@@ -30,10 +30,11 @@
 from lean.components.util.project_manager import ProjectManager
 from lean.components.util.temp_manager import TempManager
 from lean.components.util.xml_manager import XMLManager
-from lean.constants import MODULES_DIRECTORY, TERMINAL_LINK_PRODUCT_ID
+from lean.constants import MODULES_DIRECTORY, TERMINAL_LINK_PRODUCT_ID, LEAN_ROOT_PATH
 from lean.models.docker import DockerImage
 from lean.models.utils import DebuggingMethod
 
+
 class LeanRunner:
     """The LeanRunner class contains the code that runs the LEAN engine locally."""
 
@@ -314,7 +315,7 @@ def get_basic_docker_config(self,
             file.write(json.dumps(lean_config, indent=4))
 
         # Mount the Lean config
-        run_options["mounts"].append(Mount(target="/Lean/Launcher/bin/Debug/config.json",
+        run_options["mounts"].append(Mount(target=f"{LEAN_ROOT_PATH}/config.json",
                                            source=str(config_path),
                                            type="bind",
                                            read_only=True))
@@ -495,7 +496,7 @@ def set_up_csharp_options(self, project_dir: Path, run_options: Dict[str, Any],
         # Copy over the algorithm DLL
         # Copy over the project reference DLLs'
         # Copy over all output DLLs that don't already exist in /Lean/Launcher/bin/Debug
-        run_options["commands"].append("cp -R -n /Compile/bin/. /Lean/Launcher/bin/Debug/")
+        run_options["commands"].append(f"cp -R -n /Compile/bin/. {LEAN_ROOT_PATH}/")
 
         # Copy over all library DLLs that don't already exist in /Lean/Launcher/bin/Debug
         # CopyLocalLockFileAssemblies does not copy the OS-specific DLLs to the output directory
@@ -652,7 +653,7 @@ def _ensure_csproj_uses_correct_lean(self,
             package_reference.clear()
 
             package_reference.tag = "Reference"
-            package_reference.set("Include", "/Lean/Launcher/bin/Debug/*.dll")
+            package_reference.set("Include", f"{LEAN_ROOT_PATH}/*.dll")
             package_reference.append(self._xml_manager.parse("<Private>False</Private>"))
 
             include_added = True
diff --git a/lean/constants.py b/lean/constants.py
index bf90e1a8..3df17e41 100644
--- a/lean/constants.py
+++ b/lean/constants.py
@@ -16,6 +16,9 @@
 
 # Due to the way the filesystem is mocked in unit tests, values should not be Path instances.
 
+# The file in which general CLI configuration is stored
+LEAN_ROOT_PATH = "/Lean/Launcher/bin/Debug"
+
 # The file in which general CLI configuration is stored
 GENERAL_CONFIG_PATH = str(Path("~/.lean/config").expanduser())
 
diff --git a/lean/models/options.py b/lean/models/options.py
index f80ba5dc..4716e224 100644
--- a/lean/models/options.py
+++ b/lean/models/options.py
@@ -68,7 +68,8 @@ def __init__(self,
                  description: str,
                  allowed_values: List[str],
                  is_sensitive: bool,
-                 storage: Storage) -> None:
+                 storage: Storage,
+                 default_value: str = None) -> None:
         """Creates a new ChoiceOption instance.
 
         :param key: the name of the key of the option in the given file, should use hyphens for separation
@@ -76,8 +77,10 @@ def __init__(self,
         :param allowed_values: the values which can be set
         :param is_sensitive: whether the contents of this option may be logged without masking it
         :param storage: the Storage instance to store this option in
+        :param default_value: the default value to use for the choices
         """
         self.allowed_values = allowed_values
+        self.default_value = default_value
 
         if description.endswith("."):
             description = description[:-1]
diff --git a/tests/commands/test_optimize.py b/tests/commands/test_optimize.py
index a9d194ca..ad1576de 100644
--- a/tests/commands/test_optimize.py
+++ b/tests/commands/test_optimize.py
@@ -21,7 +21,7 @@
 
 from lean.commands import lean
 from lean.components.config.storage import Storage
-from lean.constants import DEFAULT_ENGINE_IMAGE
+from lean.constants import DEFAULT_ENGINE_IMAGE, LEAN_ROOT_PATH
 from lean.container import container
 from lean.models.docker import DockerImage
 from lean.models.optimizer import (OptimizationConstraint, OptimizationExtremum, OptimizationParameter,
@@ -136,7 +136,7 @@ def test_optimize_mounts_lean_config() -> None:
     docker_manager.run_image.assert_called_once()
     args, kwargs = docker_manager.run_image.call_args
 
-    assert any([mount["Target"] == "/Lean/Launcher/bin/Debug/config.json" for mount in kwargs["mounts"]])
+    assert any([mount["Target"] == f"{LEAN_ROOT_PATH}/config.json" for mount in kwargs["mounts"]])
 
 
 def test_optimize_mounts_data_directory() -> None:
diff --git a/tests/commands/test_research.py b/tests/commands/test_research.py
index 2a40c50a..c6fd09ab 100644
--- a/tests/commands/test_research.py
+++ b/tests/commands/test_research.py
@@ -19,7 +19,7 @@
 from dependency_injector import providers
 
 from lean.commands import lean
-from lean.constants import DEFAULT_RESEARCH_IMAGE
+from lean.constants import DEFAULT_RESEARCH_IMAGE, LEAN_ROOT_PATH
 from lean.container import container
 from lean.models.docker import DockerImage
 from tests.test_helpers import create_fake_lean_cli_directory
@@ -56,8 +56,8 @@ def test_research_mounts_lean_config_to_notebooks_directory_as_well() -> None:
     docker_manager.run_image.assert_called_once()
     args, kwargs = docker_manager.run_image.call_args
 
-    lean_config = next(m["Source"] for m in kwargs["mounts"] if m["Target"] == "/Lean/Launcher/bin/Debug/config.json")
-    assert any(m["Source"] == lean_config and m["Target"] == "/Lean/Launcher/bin/Debug/Notebooks/config.json" for m in
+    lean_config = next(m["Source"] for m in kwargs["mounts"] if m["Target"] == f"{LEAN_ROOT_PATH}/config.json")
+    assert any(m["Source"] == lean_config and m["Target"] == f"{LEAN_ROOT_PATH}/Notebooks/config.json" for m in
                kwargs["mounts"])
 
 
@@ -77,7 +77,7 @@ def test_research_adds_credentials_to_project_config() -> None:
     docker_manager.run_image.assert_called_once()
     args, kwargs = docker_manager.run_image.call_args
 
-    mount = [m for m in kwargs["mounts"] if m["Target"] == "/Lean/Launcher/bin/Debug/Notebooks/config.json"][0]
+    mount = [m for m in kwargs["mounts"] if m["Target"] == f"{LEAN_ROOT_PATH}/Notebooks/config.json"][0]
 
     with open(mount["Source"]) as file:
         config = json.load(file)
diff --git a/tests/components/docker/test_lean_runner.py b/tests/components/docker/test_lean_runner.py
index 5832e278..e7996e86 100644
--- a/tests/components/docker/test_lean_runner.py
+++ b/tests/components/docker/test_lean_runner.py
@@ -25,7 +25,7 @@
 from lean.components.util.project_manager import ProjectManager
 from lean.components.util.temp_manager import TempManager
 from lean.components.util.xml_manager import XMLManager
-from lean.constants import DEFAULT_ENGINE_IMAGE
+from lean.constants import DEFAULT_ENGINE_IMAGE, LEAN_ROOT_PATH
 from lean.models.utils import DebuggingMethod
 from lean.models.docker import DockerImage
 from lean.models.modules import NuGetPackage
@@ -163,7 +163,7 @@ def test_run_lean_mounts_config_file() -> None:
     docker_manager.run_image.assert_called_once()
     args, kwargs = docker_manager.run_image.call_args
 
-    assert any([mount["Target"] == "/Lean/Launcher/bin/Debug/config.json" for mount in kwargs["mounts"]])
+    assert any([mount["Target"] == f"{LEAN_ROOT_PATH}/config.json" for mount in kwargs["mounts"]])
 
 
 def test_run_lean_mounts_data_directory() -> None: