I have contacted my host and am still unable to install elgg

I can not install elgg, after it tells me that the database was successfully installed, It takes me to the system settings screen I fill it out, click save and get a 404 error....

The original path was this http://mysiteimmakingblachahs.net/action/systemsettings/install

the folder within elgg was 'actions' not 'action' like above. So, I renamed the folder and then I am still getting the same error.

I created all the pages, and the htaccess.

everything was smooth untill this point. Can you please help me ?