That specific error is actually referring to latches on memory spaces in the buffer. Basically, SQL Server is removing shared objects (cached query plans) that objects have a latch (a latch is basically declaring "I'm next" for a lock on the object). In this case, his query was trying to use a cached query plan that is no longer in the cache. This generally happens when you are using AWE.
I haven't run into this specific error myself, but I suspect it could be fixed by recompiling the queries/procedures or by clearing hte memory buffers so that SQL Server realizes that the query plans are no longer cached.