I am getting the following error when installing My Twitter Version 2.5.8:
Plugin requirements issue(s):
SimpleXML cannot be found. You can ask your hosting provider to enable it or you can't use this plugin.

I contacted GoDaddy and they confirm Simple XML is installed. But say that is all they can do since it is a 3rd part app.  WordPress is installed in a directory called WP but I don't think that should make a difference.  http://tunetownstudios.com/WP/

I've removed and readded the app.  Any ideas?

Thanks for any help.