hmm not sure what to tell you. have you deleted the saved file in the addon isboxer? the one with your team name and character name? maybe they all got corrupted or something like that and you just have to remake it(export to innerspace). another thing comes to mind is making sure each character has a different FTL modifier if you have not checked yet.

if possible, could you share your ISboxer config file? you can edit out your Wow info if you are worried about it