[Meee]

Is this with Firefox?

Try this:
http://kb.mozillazine.org/The_associated_helper_application_does_not_exist

It's usually listed as content type 'Bittorrent File' in the application list.

 

[Meee]

lol oops

Should be this:
http://kb.mozillazine.org/The_associated_helper_application_does_not_exist

 

[Meee]

np