(EQ2) Sudden Dual boxing issue - technical help needed!

Good afternoon,

I hope I am posting this in the right place...
I have been running two accounts on my computer for a couple months without any issues... untill this afternoon.
All of a sudden I am getting an error message when I try to run the station update to log in my second account.
Here is the text of the message that pops up:
"There was a problem moving C:\Program Files\Sony\EverQuest2\lp_temp\ui.log to C:\Program Files\Sony\EverQuest2\ui.log"
I have tried searching the forums but I have not been able to find any answers - any help would be greatly appreciated!!!

Updating problem

Maybe that'll work?