Hello! It sounds like your code indentation is not correct!
If your code looks like this:
test_device := class(creative_device):
@editable
GunsConversationDevice : conversation_device = conversation_device{}
Change it to this:
test_device := class(creative_device):
@editable
GunsConversationDevice : conversation_device = conversation_device{}
If it already looks like the last piece of code, try and re-indent your code!
Let me know if you are still facing issues!