All other files on the computer work perfectly. If I then select 'Save', it saves the new version and I can launch it from the desktop without any problems. This problem has been going on for a few updates now.
What on earth is the problem here?
Thanks all for the Help
(If there's nothing in the exe OpenWithProgids, please see the reply directly before that one for how to save a registry diagnostic for the exe type, and send us the results of that instead.)