When attempting to record on one of my HDVR2's I get an "Internal Error #86" and am unable to record. The only reference I can find to this error is here, which indicates that it's probably a corrupt MFS file system, and the only cure is a clear and delete everything. Has anyone else had this problem or know what causes it? The only difference between this and my other HDVR2 (which records fine) is that I just added a music a photo server last night, but that just seems like coincidence.