[tor-talk] Error replacing old router store: Permission denied

[Hasan]

Hi
recently when I run vidalia 0.2.19 on Win7 with NIS antivirus, I see this
error:
Aug 17 14:08:42.616 [Warning] Error replacing old router store: Permission
denied
Aug 17 14:09:43.614 [Warning] Error replacing old router store: Permission
denied
Aug 17 14:09:54.584 [Warning] Error replacing "C:/Program Files
(x86)/Vidalia Bundle/Vidalia\state": Permission denied
Aug 17 14:09:54.584 [Warning] Unable to write state to file "C:/Program
Files (x86)/Vidalia Bundle/Vidalia\state"; will try again later
Aug 17 14:10:44.620 [Warning] Error replacing old router store: Permission
denied
Aug 17 14:11:45.616 [Warning] Error replacing old router store: Permission
denied
.
.
.
.


1) why did it happen?
2) what can I do to solve this problem?

thank for attention