yeah, you might want to post a cap.
also, depending on the size of your cap
you could try erasing chunks of it, until it stops happening, and then when it does, undo that last erase, and start erasing piece by piece until you find the answer
if you're using white layouts (the default)
it sounds like the problem could be camera related. maybe you're following an object that either disappears, or causes some kind of invalid state for the camera, and it's scrolling to -400,400 or something and all you're seeing is some random spot outside your layout?
and awesome to see more bronies coming forward