Access to report file denied. Another program may be using it.

Hello,

I have an ASP.NET application that is using Crystal Reports. Recently we'd got a new server with IIS 7.5 and I'm trying to move my application there. But while in our old server everything is OK, in our new server when I try to open a Crystal Report I get this:

Error in File GraphicsSheet {913EF9D3-A42A-49AC-B38D-999E5CF7FACD}.rpt: Access to report file denied. Another program may be using it.

All appropriate permissions are set to %TEMP% and C:\Windows\Temp folders. According to the error message, it seems to me that the temp .rpt files output to the root folder instead of the Temp. But I don't know where I can check this and how to change it. I don't see anything in IIS about this. Can anyone advise me on this?

Thank you.