the movie cannot read the url of the containing html, only anything inside the embedding.
If you are loding a html page as
test.html?var=value
check this thread for a technique to transfer the value to flash http://www.flashkit.com/board/showth...hreadid=275953
If you are loading a script page (ph, asp) in this way, the server script should add the variable to the embedding
the buttons use loadvaribles with the GET option - so all current variables are tacked onto the url by flash. Now, when you come there the second time, you have a variable passed in and put one into your own request ... that makes two of them (with conflicting values)
Get rid of those GET bits ... choose "no sending" or whatever it is called