I have a similar problem. I have installed a GD theme and GD plugins and when I try to add a new listing or edit a listing at the front end it just reverts me back to the home page once I click publish. I also cannot find any way to add reviews on the front end either. The backend works perfectly. The only plugins I have had installed and activated other that GD are Jetpack and WPMUDev dashboard and ultimate maintenance mode. When I switch off all non GD plugins I have the same issue. This is very frustrating and confusing as this was all a fresh install and I would have thought it would have worked from the word go.
resources.wearethecity.com
Any ideas on how to resolve? I notice from this thread that the php.ini had to be deleted to make it work. I dont have a php.ini file on this site so not sure what is going wrong.
Many thanks
Stewart