Hello I'm trying to write a Python script which takes a csv list with IP addresses and connects to these IPs. I have already managed to parse the csv file and entered the IP addresses but I can't get bpy.ops.crowdrender.send_connect_msg to work. The error msg I'm getting is this: Python: Traceback (most recent call last): File "C:\Users\Admin\OneDrive\Desktop\crowdrender.blend\operator_simple.py", line 48, in <module> File "C:\Program Files\Blender Foundation\Blender 3.2\3.2\scripts\modules\bpy\ops.py", line 115, in _call_ ret = _op_call(self.idname_py(), None, kw) RuntimeError: Error: Python: Traceback (most recent call last): File "C:\Users\Admin\OneDrive\Desktop\crowdrender.blend\operator_simple.py", line 25, in execute File "C:\Users\Admin\OneDrive\Desktop\crowdrender.blend\operator_simple.py", line 12, in main File "C:\Program Files\Blender Foundation\Blender 3.2\3.2\scripts\modules\bpy\ops.py", line 113, in _call_ ret = _op_call(self.idname_py(), C_dict, kw, C_exec, C_undo) RuntimeError: Error: Python: Traceback (most recent call last): File "C:\Users\Admin\AppData\Roaming\Blender Foundation\Blender\3.2\scripts\addons\crowdrender\cr_source\bl_addon\ui_operators.py", line 3871, in execute bpy.app.handlers.save_post.remove(self.save_file_handler) ValueError: list.remove(x): x not in list Location: C:\Program Files\Blender Foundation\Blender 3.2\3.2\scripts\modules\bpy\ops.py:113 Location: C:\Program Files\Blender Foundation\Blender 3.2\3.2\scripts\modules\bpy\ops.py:115 And the code I'm trying to run: node_dict = {} node_name = bpy.data.scenes['Scene'].crowd_render.cr_nodes[0].name node_dict[node_name] = bpy.context.scene.crowd_render.cr_nodes.get(node_name) bpy.data.scenes['Scene'].crowd_render.cr_nodes[0].node_address = 'xxx.xxx.xxx.xxx' bpy.ops.crowdrender.connect_node() bpy.ops.crowdrender.send_connect_msg(node_dict) (I'm trying to at least get it to work with one node and the rest should be easy once I have this) From what I can see - it tries to remove a save_file_handler which should be added in the invoke() block of said operator. I'm new to scripting in blender so maybe it is something trivial I'm missing but I'd appreciate any help I can get