Well I'm glad to see I'm not the only one having permission problems in MT all of a sudden. I am unable to rebuild any entries in MT. I can rebuild the templates, but not entries.
As far as I can tell this is a new issue. I added new entries to MT last Friday and didn't have any problems. I tried to modify and add an entry Monday/Tuesday and that's when the permission issues started.
At first the permissions issues were with rebuilidng anything on the site, now it is just with rebuilding entries. I have contacted DH support, but they only suggested that I need to change the permissions on the files in addition to changing the permissions on the folders. Although I have never set permissions on the files within MT (since they are created on the fly by MT) I set permissions on the files in addition to making sure the permissions were correct on the folders but still get permission errors.
Any help anyone could give on this issue would be appreciated.