Epicor 10 - Error when configuration SSRS

I had this problem recently and I just restarted the server. I was setting up a new test environment.

I just configure the SRSS on Epicor Administrator, I got updating error message :
The process cannot access the file, because it is being used by another process.

please see the image : http://i59.tinypic.com/24mzwg7.jpg


How to solve this problem ?