We have had a couple of reports from international users of WIBU key validation failure. WIBU Systems has recently released updated WibuKey Runtime for Mac software which you can download and install to fix the problem.
Some users who also use ArchiCAD have reported a crash on quitting PowerCADD. This is a problem created in the WIBU software, and we have a fix for this in the works. Expect this problem to disappear on the next revision of PowerCADD.
This problem has been fixed in the upcoming PowerCADD 9.1.4