Theme My Login Version 6.3.8
Wordpress Multisite 3.5.1
After troubleshooting this error and disabling all plugins I finally identified it was yours causing the issue, it only happens when trying to edit the homepage, all other pages and posts work without any problems.
it will just hang on the page at this url when trying to edit -
I'm just disabling the plugin each time I want to edit right now, but I thought I would mention this in case there is an easy fix you can implement in future releases.
Thanks for a great plugin!