You've heard of the Blue Screen of the Death (Windows). You've heard of the Yellow Screen of Death (ASP.NET). Now here's the Red "X" of Death.
Got this on one of our apps the other day by our QA folks. It's a Smart Client app using the DevExpress Ribbon, CAB, and a host of other UI goodness. Needless to say, the error wasn't too useful to anyone trying to fix it.
There's *supposed* to be a grid in the middle there with all kinds of useful information and calculations. DevExpress just decided that it really didn't want to do all that work and gave us a nice big red "X" as if we're missing an image from a website.