I have just rescently jailbroke my 3G running 2.1. I installed customize from Cydia, and it's not working. It will not load anything. I can't edit system strings, nothing comes up when clicked. Also I can't browse themes for it says "customize could not load due to no connection. Please connect and re run customize". But I am connected to wifi! I don't get it. Is there anything else I need to install to allow it. I think there is but I can't remeber. ( it's been a while since running this app on my og iPhone.) So please, any help would be greatly appreciated. Thanks in advanced. 
P.S.- Yes I have reinstalled item from cydia and it still doesn't work.
P.S.- Yes I have reinstalled item from cydia and it still doesn't work.