OK, so, update; I went through the CF search engine and looked up all the CDLCs and re-downloaded them. Except, as it turns out, the one I really wanted with the corrupted BNK file that was just borked and would definitely have to be completely rebuilt...turns out Rocksmith actually has that song as ODLC now, so, problem solved! :) The one with the messed-up tone name is still showing the same symptoms, and still doesn't get fixed with "Ignore Multitone Exceptions". However, there's a second CDLC of the same song now, and that one downloads and goes through the repair process with no issues. Problem solved again! Here's where it gets strange. When I ran the default repair (Repair 100% bug, Add DD, preserve stats, nothing else checked) it did fix four of the five "I can't read this XML file" ones. This is after I confirmed that the files I already had were the same files I re-downloaded (evidence: identical filenames and byte counts...I don't know of a way to do an actual diff on MS Windows but I figure if they're exactly the same number of bytes, that's pretty conclusive). Then I moved all the newly-fixed CDLC out of the way and ran the same repair again, with just that one CDLC file in the directory, and it worked too. I can't even begin to guess why, but I'm letting you know in case it helps you in some way in the future. Soooo, while I didn't necessarily solve all the problems, I am at the desired end state. I mean, I guess it's worth noting that I've been doing all this 100% in CFSM...I haven't actually fired up RS2014 at any point to actually see whether these files work in the game, but I'm sure that's just a formality. Like I said, if you want me to run tests on anything for troubleshooting purposes, let me know (it's the least I can do in return) but in practical terms I'm all set now. Thanks again!