*VSL* + Syncrosoft/OS X/Logic (and/or, in whatever order) just gives me an error message if I try to insert a V.I. Player on a Mac with the dongle unattached. But I can absolutely confirm that inserting most if not all Syncrosoft-protected instruments from other developers makes whatever host you're using go BOOM! if the dongle isn't there. And it's a rock-hard crash with no option to save. I now know to keep careful track of what's connected to what machine in order to avoid this (which isn't necessarily straightforward if you review software all the time and have nine or ten dongles!).
Syncrosoft says it's Apple's fault, but this is a pretty serious issue regardless of whose fault it is. It shouldn't still be going on, frankly, and if I were Syncrosoft - a slightly smaller company than Apple, one for whom this is a much higher priority, and probably the one that gets shouted at when this happens - I'd have someone shrieking at Apple 24 hours a day until this got sorted out.