I got the same stuff. Problems I had I had to find myself. It was a few things at different times. Try disconecting Lime from internet in file tab/disconect. Then look at your anti-virus or anti-spy programs. They can block file to file changes. I just shut down the internet and security program, then change the file. If it doesn't work with security off, check the properties of both folders. They may be disallowing it by default. Like for instance XP won't let me into my userdata file which is empty nor can I delete it. I figure it out in a day or so. Acces denied means acces is denied by your system so if you recently quarantined something from that folder your security or spy sweeper program may have blocked the folder for limewire especially if the the quarantined file came off of limewire. Then some programs do see limewire as a spyware program so make sure you have limwire.exe as allowed in your security settings.
That is all I know from my limited experiance hope it helps.
Shaun
P.S. Oh make sure you reload or re-enable your spy and security programs. I forgot once and was fixing bugs for weeks.