[mmorse]

hm, can't set the modifyFolderURL back to what it was? (try this on a test account because I would hate to have you loose mail in those folders) plus you might need to change the defaultView/foldertype so that you could go into the mail app to actually check if everything's showing up fine. Then instead of rename, transfer/copy the mail to a new folder/possibly grab it out to a .zip with rest. (transfer/copy instead of rename just so your sure there's no quirks leftover.) then delete the offending folder.