JUst a bit strange that student from Italy are asking for help here instead of directly contact Cigraph (official Italian ArchiCAD Distributor and ArchiSuite Developer).
Anyway, unfortunately we are not able to reproduce the trouble (BTW, it has been already forwarded to GS) so it's really hard for us to fix it.
What I can say is that usually this strange behavior is the result of something of wrong with the ArchiCAD installation under Macintosh computers (all the people reporting this trouble are Mac users).
A lot of them, after reinstalling ArchiCAD solved the trouble.
On the other hand, I always ask for the GS Report because this is the only way to have a perfect report about the user configuration and, every time this trouble occurs I verified that the GS Report is reporting the same trouble about WIBU driver installation (see the attached image).
If a new fresh installation of ArchiCAD doesn't solve, usually it should be enough to install the WIBU software from the ArchiCAD DVD (or downloading it from the GS website... please pay attention we are talking about WIBU and not CODEMETER software).
Hoping sooner or later we will be able to understand this strange issue,
Friendly
Fabrizio
Fabrizio Diodati
Graphisoft Italy Srl | Via Rossignago 2/A Spinea Venezia 30038 Italy