Im trying to install a new plugin and when I click installed plugins link from the admin area, I get a 404 error.
I googled and tried to
remove all plugins from the plugin director and the error does go away, but if I replace ANY one plugin folder to the plugins directory, I get the 4040
I have also deleted the .htaccess file and resave the permalinks and that does not help.
Im out of ideas.
The only thing I did prior that may have caused this is that I removed the plugin Jetpack because it was causing a conflict with another plugin and causing 404 page errors when comments were left. this was solved by removing Jetpack. Later I discover this error with entering "installed Plugins".
rest of site is fine though
Im using version 3.7 of WordPress.