gbley,
The whole concept of teamwork is that you,
1. Have a PLP file, that is located on a server, although it doesn't have to be
, for the picky people
2. You sign into a PLP file with the respective rights/areas.
3. Save a local copy ,PLC, you can save this to the same folder as the PLP, but I don't really know why you would want to do this, but that's fine, a PLC is , as stated before, a local copy of the PLP.
4. The PLC is just for what you want to do, work off line, but you
MUST remaind signed into the PLP if you want to avoid problems, such as the one you are having at the moment. So when you work in your PLC , at home for example, just click by the warning messages that ArchiCAD can't find the PLP, then when you come back to the office with your changes/additions you can simply over write the old PLC and do a send and receive changes.
HTH.
CHeers.
Ben