I'm a computer user, so I have no idea what I'm talking about, but I think my problems with Riverview and Awesomemod (or my inept installation) are related to those xcpt... files. I don't remember even seeing them before I installed Riverview and I certianly didn't delete them during my past successful run with Awesomemod. Two such files get generated each time I launch -- or try to launch -- the game now, and they don't overwrite themselves as I had eight of them stacked up in there during my latest round of monkeying with things.