You look at trying a couple things. Since you can't see historical charts anyway, you may want to look at disconnecting, then removing an ESX Host from vCenter. From there add it back. Once added back, check the performance charts. You may not be able to get historical data, but there error may go away and be fine going forward.
....and a little more extreme, but worth a try, recreate the rollup jobs
http://kb.vmware.com/kb/1004382