External.external swf loading another swf on main?

I ran into a problem but im not sure what it is, maybe someone can help.

I have a main movie that has a series of btns. The btns load one of a series of external swfs into an container that when at their midframe load another external swf into a container in the external swf. This last swf has a series of btns that load one of a series of swfs into another main movie container. The swfs all load into the main movie just fine, but when I load one of them and then another in its place the entire main movie reloads itself. This only happen after one specific swf has been loaded followed by another.

I can’t seam to figure out why only one of these external swfs would cause this. Any ideas of what may be going wrong here?

FYI: My movie is based on the kirupa.com “tansition between exteranl swf” tutorial by Voetsjoeba

Thanks all