I have had similar problems with connector and was told to delete all *.ost files. There were several so I figured this made sense. Uninstalled connector and reinstalled creating account again. As before it still only downloaded emails the first time and subsequently gave the folder name error. Are there some other files or keys that need to be deleted to reset all perhaps? Aside from the bad link on updating seems like there are these other bugs in new update, is MS addressing?