I'm a little embarassed to admit it, but despite working with RMXP for several months, I still have no idea how to get transitions to work in events.
I'm currently making the intro to a new game of mine, and the idea is simple (and sadly cliche): The screen is black, and then words fade in (picture1), stay for 100 frames, then fade again to blackness. Wait 20-40 frames, new words fade in (picture2) stay for 100 frames, then fade to blackness. Etc. etc.
A basic, everyday game intro thats been done thousands of times, but no matter what I do, I can't get the "prepare transition" or "execute transition" commands to do ANYTHING.