If you didn’t make any changes to your server (adding a new theme, new plugin, etc), it may because of a change on the server performed by your hosting provider.
If you changed a theme or a plugin, it’s likely there’s an incompatibility between the new theme/plugin and Multiple Themes. That’s relatively easy to approach, because once you narrow down the new item, we can do some compatibility testing.
Server side stuff is a bit harder. This guide can help a lot:
http://www.makeuseof.com/tag/the-ultimate-guide-to-solving-500-internal-server-errors-and-blank-white-pages-in-wordpress/
If you can narrow down what’s causing the problem, once again I can look into it and see if it’s possible to help you fix it. But I’m afraid you’ve got some detective work ahead.
–David
Well at first this is what happened.
I did theme test drive, I disabled it then when I tried to go to the pages section my whole website had the white screen of death, i fixed that by getting rid of all plugins through FTP.
When I re-installed each one of the plugins one by one, whenever I click on your plugin’s settings it gives me the 500 internal server.
I wonder if there could be a corrupted file that needs to be deleted.
everything else works fine just that part of the plugin doesn’t.
I know its not the server, i think it might be a file or something like that.
That’s certainly a possibility. Might not hurt to delete the Multiple Themes folder and reinstall. Do you have the same problem with different themes (like Twenty Fifteen and Twenty Twelve)?
–David
