Mehod 'Item' of object 'Forms' failed (run-time error 40036) (1 Viewer)

I've encountered this error in the past. The last time I ran into it, I recall that I had the name of a column wrong that I was referencing in Form_Current... Something along the lines of Forms![MainForm]![Ooops] instead of Forms![MainForm]![Great Job]

The odd thing about this error is that the line that it stops at is the first line of Form_Current for one of its subforms. It doesn't show where the problem is in the main form and I can't set a break point - It's almost like it never reaches it.

I was lucky enough to stumble across my mistake last time. I'm currently going through my code and can't seem to find it. Is there an easier way to figure out the real problem that is causing this error? It could take me a long time to find it just going through the code.

Thanks in advance...