Trouble with jpgs loading into loaded swf

Here’s what I’m after:

I have five different swfs. Each swf holds five movie clips; each clip randomly loads a jpg. This works fine.

Now, i want to randomly load the swfs into a masterMovie. The swfs load, but now the jpgs don’t.

Any ideas, anyone? I’ve attached a quick sample of what I’m after (the actual live project is too big to post here!)

As always, thanks for all your help!