Apparently, if your network card goes on the fritz, and you subsequently lose that MAC address (which the SketchUp licenses are tied to), there is no way to “remove” the license tied to that address, and you are effectively out a $600 SketchUp license (yes, I know you can use each license on two computers, but that is beside the point.)
I found this out by emailing tech support that hypothetical question. They frustratingly dodged the question over several emails until finally admitting that they are unable to release licenses on their end.
I find this hard to be believe and completely unacceptable. Anybody been screwed by this?