If you have questions, you may post them in the Mupen64Plus Google Group. To report a problem or a bug, you may post a message on the google group, or use the Github User Issue Tracker to file a bug report.

We also have an IRC channel where many of the developers and fans hang out. If you would like to stop by with a question or to say hi, it’s #mupen64plus at irc.freenode.net