Change error message

Is there a way, in blitz 3d, to catch a runtime error and then use script to put up my own pop-up window, saying where in the code the problem was, what kind of error, and to please email me at the bottom?
What I'm asking is (you may accidentally answer the wrong part otherwise): Can I set a unique runtime error window for my program? This way, if i were to release something and people mucked it up somehow, I'd have a clearer idea of what's wrong and they would know to email me.

No.

lol, good answer

The 'RuntimeError' command is probably the nearest you'll get to this, for a release version.

Graphics 800, 600, 0, 2
RuntimeError "Email me - FOOL!"
pic = LoadImage( "" )
DrawImage pic, 0, 0
WaitKey()
End