Continuity mistake: At the end, Solo and Illya are sitting at a small bistro table as the captured bad guys are marched past them. Solo wears a green fez, and between shots, Illya suddenly acquires a red one. It wasn't in his hands or on the table before that: it just seems to appear on his head out of nowhere.
Factual error: Solo's communicator starts transmitting all by itself. He's bound and tied when Illya calls, but somehow the "ring tone" stops and the frequency opens, allowing Illya to hear what the bad guys are saying, all while the unanswered and untouched device is still in Solo's pocket.