SSRS - Subscriptions

I'm fairly new to reporting services. I have set up a timed subscription to run a report and write it to a file though the report manager. I can see that the report ran but I see the following error.

"Failure writing file FIRM_LIST : The report server has encountered a configuration error."

Any ideas to get more specifics on the error?

Check in the application log on the reports server. If there is nothing in there check in the reporting services LogFiles directory (something like C:\Program Files\Microsoft SQL Server\MSSQL.2\Reporting Services\LogFiles), these tend to give you quite a bit of info.

In my experience the main problem with scheduling reports to write to a folder are permissions issues. Make sure the user you are using to run the report has write/delete access into the folder you are trying to save to