Hi, I got this same error, when I try to edit themes. it’s the same with every theme. It happened when i did update Regenerate Thumbnails and some other plug in. After this I get that loop about log in and after I did change my password, it worked fine an hour. Then I suddenly got that “Cheatin’ uh?” and can’t modify.
Older posts about this are 10 months old – should this bug have been fixed? I have the latest 4.31 version of Wp
I switched off Regenerate Thumbnails, but it didn’t help. Any ideas?
