Here's a new one. Teamwork in AC12 is not creating LCK files, so multiple people are able to sign in at the same time. This doesn't seem to be causing any problems, as long as signing in/out is communicated among team members, but it is a concern. I had saved the PLP as a PLN, merged a New & Reset file, and reshared -- so basically, it's a new PLP and we're still having problems. Supposedly, all was normal yesterday and this is a new development.