I have no problems with the ITG on either Mac or PC. I haven't tried them with the edu version, though.
EDU and Commercial versions are identical, apart from the fact that the EDU version toggles some switch in any file it saves or creates, to turn it into an EDU file. This is a regular (compatible) pln file, but permanently altered to display the EDU watermarks.
In short, for students there is no 'problem': they will have the banner always. For commercial clients: do not use files that passed through an EDU version, apart from viewing and printing. Do not use them in your projects or you'll inherit the watermark.
I think it is a fair protection against commercially abusing the EDU version.
--- stefan boeykens --- bim-expert-architect-engineer-musician ---
ARCHICAD-user since 1998