Is the borrow issue repeatable or was this a one time issue? With what I can see from the stack trace, I would suspect the state file has been corrupted or one of the restore files is corrupted. Most of the time, deleting the state file (vslick.sta) and vrestore.slk from your configuration directory will get you running again, though you will have to restore some of the lost settings/layout in that case. Or renaming/moving your existing configuration directory and letting a new be created in its place.