I upgraded the external resources to use libraries version v2.0 to get the new PhoneGap version, as I was having trouble with the status bar in iOS7. Immediately after, the pages looked terrible.
I found that if I duplicated them, then the styling on the new versions seemed better. I've now deleted the old page but I can't rename the "loginScreen_new" page back to "loginScreen". It just silently fails.
I also cannot export the project - again, it silently fails.