From the kvr database, I can see that Ugo Rez is made with SynthEdit. Unfortunately there is a common problem with many SynthEdit made plugins, that causes crashes when using more than one instance with multiprocessing. This occurs in most hosts. You can try to disable the “multiprocessing” option in Podium preferences to check this. I think that the most recent SynthEdit update had a fix for this problem, so perhaps once the Ugo developer rebuild the plugin, the crash problem will be fixed.