I can second that. I just had to fix one yesterday that pipe and I were swapping. I couldn't get one of the track's FX windows to open. I opened the rpp in notepad, and in about three or four minutes I realized that he has a larger screen resolution and the FX window was simply off my screen, to the right. I just typed in the proper screen placement and was up and running.
Believe me, if I can figure it out, it can't possibly be too difficult!
This is another one of those little details that puts Reaper ahead of other DAWs.