NaNs in error box output

I have a menu that loads swf files externally. One of the swf files is a slideshow this is on the first page of the site. Whenever I unload the slideshow swf and load a new swf I get a continuous list is NaNs in the output box when I test the movie. I check my system resources and it’s constantly at 80% cpu usage.

If I do not load the slideshow swf from the start and goto the other pages it’s ok. Any ideas??? Help please.