Black Multicam Display - No Camera view or MC Program

I set up a multicam project today. I I have used MC a few times now but for some
reason it has decided to give me issues today. Now I will say that this is the
first time on this machine that I am using the MC. I don't see that it should
matter, but thought that I would mention it. I have set it up 2 ways this
morning. One as per the Adobe Help files. All clips synched in sequence A. Nest
Seq A in sequence B, select the sequence and enable multicam from within the
clip menu. I open the MC preview and all I get is black, no cameras. I have no
preview except for the preview monitor.

I also followed the advice on the Cow tutorial for MC which recomends placing
each clip in a sequence then stacking those sequences into another sequence,
then placing the multicliped sequence into a final sequence. I get the same
results.

When I set it up and try to play it does the render as it should, but even once
that is done there is no video in the MC monitor.

If I press 1 or 2 somewhere on the timeline it does cut it for me, I just have
no idea as to what I am cutting to.

AVI. One set (Camera)was from a capture from beta and the other was an avi
export out of Camtasia (Computer Capture). Both will play on their timeline.
Both are 720 x 480 29.97.