This is the same problem as posted prior to this correct? If you tried the other things in the earlier post, than it maybe time to try a reinstall. I had a strange one a while back that just wouldn't disappear after uninstalling from the control panel Add and Remove programs then restarting and reinstalling it fixed it. I can't say that his will work but it maybe the next thing to try .... that is if you are the one that posted last night and have tried the other things listed.
You should also check the properties of the folder to make sure it is write enabled but that's a longshot.