Upgraded my production farm to FEB 2012 CU from OCT 2010 CU a couple weeks ago and things went ok for the most part nothing major issue wise, however I ran a full sync in my User Profile Service weekend before last and started encountering the following report in my logs. I'm not able to identify if there is any impact to any of the user attributes i'm syncing at this time but i wanted to throw this error out incase others have seen the problem and know what i can check.
FIM client is reporting " stopped-extension-dll-exception "
Then i see event ID: 6801, 3 times corresponding to the three times the above FIM client status is reporting.
The extensible extension returned an unsupported error. The stack trace is:
"System.Net.WebException: The remote server returned an error: (404) Not Found. at System.Net.WebClient.DownloadDataInternal(Uri address, WebRequest& request) at System.Net.WebClient.DownloadData(Uri address) at Microsoft.Office.Server.UserProfiles.ManagementAgent.ProfileImportExportExtension.DownloadPictures(ProfileChangeData profiles) at Microsoft.Office.Server.UserProfiles.ManagementAgent.ProfileImportExportExtension.Microsoft.MetadirectoryServices.IMAExtensibleFileImport.GenerateImportFile(String fileName, String connectTo, String user, String password, ConfigParameterCollection configParameters, Boolean fFullImport, TypeDescriptionCollection types, String& customData) Forefront Identity Manager 4.0.2450.47"
I had no problems with my imports before the upgrade, we do export the profile images from sharepoint to AD incase this could be related.