Corresponding error in the NT App Event Log:
Error <Time> MSOLAP 22 (256) "The description for Event ID 22 from source <AnalysisServerName> cannot be found. Either the component that raises this event is not installed on your local computer or the installation is corrupted. You can install or repair the component on the local computer.
If the event originated on another computer, the display information had to be saved with the event.
The following information was included with the event:
Internal error: An unexpected exception occurred.