So I disabled all plugins and still had the same problem. Reverted back to Twenty Eleven as the theme, but had no luck. I did a little more research on the PHP error and discovered that The Community add-on had the same issue with WordPress version 3.5. I discovered I was using an old version of Community, version 1.01 instead of the latest 1.05 which I thought I had. Downloaded and installed the latest version and it worked. No plugin or theme conflicts. Lesson learned. Double check those version numbers and stop working after midnight.