Quick and dirty troubleshooting tip - copy the file riched20.dll to richedit20.dll, and see if that clears up your RioMM problems.

Been there, done that, no help. I'm assuming that because riched20.dll re-appeared after re-installing RioMM, that's the file it's talking about.

Thanks for posting to the beta board... Though my guess is "DLL Hell" isn't something they support.