io_scene_fbx/export_fbx_bin.py

@@ -3612,8 +3612,9 @@ def save(operator, context,
         if use_active_collection:
             source_collection = context.view_layer.active_layer_collection.collection
         elif collection:
-            if collection in bpy.data.collections:
-                source_collection = bpy.data.collections[collection]
+            local_collection = bpy.data.collections.get((collection, None))
+            if local_collection:
+                source_collection = local_collection
             else:
                 operator.report({'ERROR'}, "Collection '%s' was not found" % collection)
                 return {'CANCELLED'}