I used to have the same problem when there was a LCK file, or when for some reason Some user lost the "rights" to write on the Server.
It's not a huge problem since you can save your local copy, close archicad and then try it again.
In any case be sure everyone is using the same built, and there are no issues with the server.
Hope this helps
Nando M
Nando Mogollon
Director @ BuilDigital
nando@buildigital.com.au
Using, Archicad Latest AU and INT. Revit Latest (have to keep comparing notes)
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