allow not using any unit

Author: lllyasviel

scripts/controlnet.py

@@ -707,13 +707,13 @@ def controlnet_main_entry(self, p):
         if not batch_hijack.instance.is_batch:
             self.enabled_units = Script.get_enabled_units(p)
 
-        if len(self.enabled_units) == 0:
-           self.latest_network = None
-           return
-
         batch_option_uint_separate = self.ui_batch_option_state[0] == external_code.BatchOption.SEPARATE.value
         batch_option_style_align = self.ui_batch_option_state[1]
 
+        if len(self.enabled_units) == 0 and not batch_option_style_align:
+           self.latest_network = None
+           return
+
         logger.info(f"unit_separate = {batch_option_uint_separate}, style_align = {batch_option_style_align}")
 
         detected_maps = []

scripts/controlnet_version.py

@@ -1,4 +1,4 @@
-version_flag = 'v1.1.420'
+version_flag = 'v1.1.421'
 
 from scripts.logging import logger