A few weeks ago there was a patch released for a bug in Intellisense in the Visual Studio 2010 release candidate that was causing crashes. In most cases this patch resolved the issues experienced, however in a few cases a bug remained that caused Visual Studio to crash with a System.InvalidOperationException when performing QuickInfo. If you’ve installed the original patch (available here) and are still experiencing crashes when attempting to view an Intellisense prompt there is now a second patch available on connect to address the additional issue.
If you still experience issues after installing these patches make sure you log an issue on connect so that the right team is made aware of the problem.
