There is currently a bug in the default interface. If you are having trouble getting your interface to load please see this post by kejan first.
This following is a compare between the old EQ1 default interface (pre 6.29.05 on the left) and the new EQ1 default interface (post(new) 6.29.05 on the right) changes are in red. Use the context & line numbers to help find your way to make the changes needed to your custom interface.