Last Thursday, Marnix Wolf did up an excellent blog post about an error that started occurring after Update Rollup 2 for SCOM 2012 SP1 was deployed into environments that had Savision LiveMaps deployed. Essentially, when SP1 UR2 and that particular release of LiveMaps don't like each other very much, you are presented with the following error details:
An Unexpected Error Has Occurred
Check out the post by Marnix on what he did to determine the cause (take particular note of his technique for performing trace logging of SCOM 2012 as this is an invaluable way of determining root cause of issues inside your SCOM infrastructure):
Before you dig deep into troubleshooting this yourself or thinking that Savision haven't got a solution to the problem - fear not, they have now!
I've just seen this on their website while looking for a solution to this problem myself:
They've released updated versions of the LiveMaps Summary Widget MP's that will alleviate the error above.
Hopefully this will save some people a bit of time and effort if they come across this problem.