Change the resolution of the comp viewer. You have it set to a custom value.
Try that screen shot again. It's so tiny, nobody can read anything.
It looks like it's video footage, but the footage got unlinked; you're looking at the Color Bars symbol for missing footage that AE uses, and you changed the colors.
And if you're having troubles like this, go here:
Save yourself the pain of trying to dope out how AE works on intuition alone... or perhaps even worse, AE tutorials done by high school kids. Get your info from the pros.