Hi niedec,
I remember that there were problems with UVI at the same time that we were dealing with them for UC. I don't know much about their software, but I do know that the fix from PACE required the customer to update iLok License Manager, and required us to reapply the newest version and release our software. So if there's an update from UVI that you haven't applied, this might fix your problem. If there hasn't been a release from UVI in the last year or so, they may need to do a new release to fix the problem.
Dan
