>It then happened.
>The location is that
>http://www.transformation.com/foxpro/dynamic/BC03F
>WLS.html

It seems that you are trying to go back to a page which is not there anymore. On the Universal Thread each page as a 20 minutes life duration. But, even if the page is not on the disk anymore you are suppose to have it from your cache. So, at least, try to have a cache with 2 meg in your browser. This should solve the problem.