cannot be performed on a file with a user-mapped section open

So..

I installed TortoiseSVN, when i tried to add a folder to a repository i had created with VisualSVN i kept getting the error:

"cannot be performed on a file with a user-mapped section open"

After googling around i could not find good answers to this, but I did mananged to fix the problem, heres how:

When attempting to add the folder again, I started windows process manager through task manager so that i could watch what tortoiseSVN process were running when the error occured..

I then allowed those through windows firewall and it worked fine. If you have a similar problem I hope that sorts it!

Paul