Java and browser compatibility - BusinessObjects 4.1 SP2 Patch 1

Ah the magical land of compatibility in BusinessObjects land!  This is a mysterious land, where at any moment, the solid platform underneath your feet can suddenly turn to quicksand!

When we implemented BusinessObjects 4.1 SP2 Patch 1 we had some problems.  We saw the following error when trying to create or modify reports using the Java editor:

Luckily, a new version of Java (Java 7 Update 51) had been released at about the same time, and installing it fixes the problem.  Whew!  Crisis averted!