Can't Start Anything!

I have had DDO installed around a month.

Today I clicked on the icon and the Download Manager started instead of the launcher. I restarted, tried again and the same thing happened.

I read the forums, deleted the install and tried to run setup again.

Clicked on the DDOsetup.exe and setup starts for around a second and stops again.

I downloaded the latest version.

Clicked on the new setup version and same thing happened.

Now I have no DDO and neither setup applications do anything.

HELP