"Adding the part to this assembly would create conflict of reference. Cannot add." This is the message I get when trying to add a part that is not alreay in my assembly. I open the part and it opens by itself fine. When in assembly and I do a "insert existing part" I do not get it listed in the parts list of things that are in memory, so I browse. When I find the suspect part during my browse and choose it, then open. I get the above noted error message. I have tried rebooting and nada.
Any clues why or what this message is telling me?