I realize this is an OLD thread, but I'm a new user and just experienced this error (on the write side).
My initial repository directory was quite long (like "C:\something long\something longer\something really attrociously long\and then a sub-directory which was long\and then something else") onto which the "qualifying" info from FreeRIP is appended. Is it possible that there is a directory name length glitch at play here? I've shortened my repository directory to "C:\$MUSIC_FROM_CDs" and the error has not occured since.
Just a hunch.

KevInKauai