After Configuring WP Super Cache Visula Editor Won't Work

I recently uploaded WP Super Cache and I think it is at the root of my problem. My problem being that I can’t get my visual editor to work. Only html is displayed in the editor no matter what I do.
The last things I did before noticing this problem were adding a line to my WP Config at my host c-panel and then configuring Super Cache. Since noticing the problem I have unactivated all my plugins and re activated them all one by one. I have checked all their settings and can find nothing that seems problematic. Still I can’t get the visual editor to work.
I haven’t tried another theme because I don’t think the problem is with the theme. I have also customized the theme I’m using and don’t want to mess it up.
Can anyone help?