After backing up our data daily for years fat dumb and happy, we recently had a need to actually restore a few files. When looking at the log file the backup (with verify) runs with just a few explainable file access errors, reports "incomplete" but otherwise looks ok. When trying to restore from the restore wizard, if the file I want to restore lives on the first session, it will restore the file just fine. If the file is on any other session the E3801 error pops up reporting a session ID of 00000000 or dddddddd or similar bad data. Tried another drive, tapes are new, even tried the full erase and reformat. Same results.