Unexpected error occurred while updating required files
Either this user id has not been assigned any rights on the current server, or it is an Active Directory user id.
You do not have sufficient rights to create Folder. This is possibly due to the fact that an administrator has killed the lock on it in which case your changes will be lost...
There are some other issues you might run into that have already been documented in the following articles.
Check them if you are unable to find your specific topic covered in this document: Troubleshooting Integration with SQL Server 2005 and Microsoft Share Point Technologies: Configuration Problems: SQL Server 2008 - Server 2005 - article is organized in a beginning to end format.
This is something our team is working on to see why.
When you run into a problem with Reporting Services integration, there are a few things that will, except in a few extremely rare cases, not assist in resolving the problem. There are only a few rare cases where this will help resolve the issue you are having.
You do not have sufficient rights to create Channel. If not, this is probably a software error and should be reported to the appropriate administrator.
You do not have sufficient rights to create page in this folder. SYSTEM ERROR: The current transaction failed because updating the database failed as either the database is full, or the transaction log is full.
You do not have sufficient rights to create Gallery. Please record and report to the appropriate administrator.
To remove this View, you must first delete all postings for it, and empty the Channels hierarchy's Deleted Items. Error while trying to get the children of an XML element. URL not registered with name mapper: Failed to connect to server, probably due to user authentication error.
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If Reporting Services is switched to native mode, part of the installation process is to create a Report Manager virtual directory, which is not deleted after the instance is switched back to Share Point mode.