Report Error. Microsoft Report Viewer

Question

i am using microsoft report tool for my site. it's working perfectly inside visual web dev 2008 express but when i exported it unto IIS my report page did not work and it returned an error that says:

"

• An error has occurred during report processing.
• Exception has been thrown by the target of an invocation.
• Failed to generate a user instance of SQL Server due to failure in retrieving the user's local application data path. Please make sure the user has a local user profile on the computer. The connection will be closed.



"

how do i fix this? i did not invoke any role/user properties yet ( and i dont plan to).





thanks in advance.