Hey folks, I put this in the Mac OS forum cause it's on a Mac that the issues occurs but I do not know if it's just a Mac issue... So I'll post it here incase it's just a general Reaper issue. A client of mine likes reaper but uses a Mac. (I'm a PC guy, usually). Anyway, every time we record, it all looks great. We hear it, and see it recording on the track. Then as soon as we press stop to save the files that have been recorded, an error message pops up saying something to the effect that the audio cannot be saved or unable to save audio or something. If you need more specifics I will get them. Thanks.