New server dialog error - home directory does not exist

This is not a regression, it's always been like that, but I consider it a bug.
When you're adding a server, in the dialog you're asked for the jboss home dir. But this field is pre-filled with something like this:
/usr/bin/jboss-eap-6.1+.x

This causes an error shown at the top:
The home directory does not exist or is not a directory.

I understand that the goal here was to make life easier for those who have EAP/AS/WF installed in a standard location - perhaps with rpm installation, although I doubt this would be the actual path anyway.

This violates the Eclipse UI guidelines found here in section 5.3:
http://www.eclipse.org/articles/Article-UI-Guidelines/Contents.html#Wizards

I would suggest leaving the field empty by default (and ensuring that the guideline is fulfilled). Another option would be to check if we can find an installation in the default path, then use it, otherwise leave empty.