have you updated your system software recently? That will cause key not to be seen and you need to reinstall system compnents from Archicad CD
Would that include a BIOS update, John? My laptop has been recognizing the key only intermittently, and has also been suffering from major system crashes at various points in the working process, from during modeling to just after the key isn't detected. Dell had me update the BIOS and it hasn't helped.
I've sent an email to tech support about this, but figured I'd also ask here, since the topic has come up.