It's one of those things, either Rewrite rules work, or they don't. Elgg doesn't work unless they do. So the only thing I would suggest checking is the second part of it where things are pointing to places where things exist.
Well at least the script works. If you got there using the redirect, twice as good.
gzencode is a php function. You can go to the php website and read up on how it works and write a script to try to gz something. You might...
Ok, the blank page is a good thing. It means that you can see the script and you have not passed any variables to it.
The good news is that the script works.
This simulates what...
Ok.. unfortunately I am not seeing everything you are seeing (or are able to see), so lets talk about what the rewrite rule actually does and maybe that might help.
Basically, the objective of the rewrite rule is to convert a request from Google,...
Well the fact that you are on Fatcow doesn't help me. Knowing the path to where you have placed the SiteIndex directory, and seeing the tail part of your .htaccess file may help me.
Did you set the path appropriately per the instructions?