When I click 'Update' or 'Preview Changes' from the Edit page on certain posts or pages, I get a 404 error.
I have tried the following fixes -
1. Disabling plugins
2. Using default theme
3. Repairing database tables through phpMyAdmin
4. Setting .htaccess permissions to '666'
None of these have worked.
This is a real problem for me as a lot of these pages need changing, and any edits are now impossible. I really hope someone can help! I will be so grateful. Best wishes.