Maybe there were not proper records in Registry?
Try this:
Right Click on some PDF.
From the Menu choose "Open with..."
Chose the application and do not forget to check "Always use...."



>Ok, put in the error checking and the return value is
>"There is no application associated with the given filename extension."
>
>However, if the user uses Windows Explorer and clicks on the file, it ipens up fine
>I would have thought that if there was no application associated, the file would not open in Explorer either ??
>Regards,
>Gerard