It might be worth a try to download a file that dont seem to be recognized by the kn?? using another browser other than internet explorer. Thinking that in the saving process windows or Iexplorer is saving it in a bad way? messing it up maybe? there are many free browsers. Another thought that comes to mind which most people can't utilize is what would be the alternative result if any using another operating system besides windows. Like Lenux I think its called. I know its not one that will surely get tried but maybe someone has something besides windows???????
Tony