Fix regression.

comfy/model_detection.py

@@ -48,7 +48,12 @@ def detect_unet_config(state_dict, key_prefix, dtype):
     unet_config["dtype"] = dtype
     model_channels = state_dict['{}input_blocks.0.0.weight'.format(key_prefix)].shape[0]
     in_channels = state_dict['{}input_blocks.0.0.weight'.format(key_prefix)].shape[1]
-    out_channels = state_dict['{}out.2.weight'.format(key_prefix)].shape[0]
+
+    out_key = '{}out.2.weight'.format(key_prefix)
+    if out_key in state_dict:
+        out_channels = state_dict[out_key].shape[0]
+    else:
+        out_channels = 4
 
     num_res_blocks = []
     channel_mult = []