I am using Desktop.open(File) and on certain machines it works fine. I
am using JRE 1.6_02. Both machines are WindowsXP with the latest
updates (as of today). The appropriate extensions are mapped. When I
try to desktop.open() on a txt file it works properly on one box, but
the other box notepad.exe (the application associated with .txt)
doesn't get launched. Are there any other parameters that I can look
for on the non-working machine? Unfortunately there desktop.open
doesn't throw any exceptions, it just gets called and continues.

I've also tried desktop.edit with the same results.