Lately I have been having a few JavaScript issues in the admin area on my blog. None of the drop-down arrows worked and I could not tag my posts. In case you run into this problem, here are the details that helped (and didn’t).
Searched WordPress.org for admin area messed up and found this reply by esmi to fix it. Typical troubleshooting process; I should have known, having a background in computers, but I am somewhat new to WordPress.
Try this one first:
“deactivating all plugins to see if this resolves the problem. If this works, re-activate the plugins one by one until you find the problematic plugin(s).”
That is what fixed the drop-down arrows for me. It was a plugin called WPMarketer (great plugin!). I didn’t deactivate plugins the last time that I updated WordPress, so I think that may have ‘broke’ this plugin.
But I still had the problem of not being able to tag my posts. So I re-uploaded my admin and includes folders.
BAD MISTAKE! Everything went blank; both the admin and the public areas turned to blank white screens.
I tried replacing files in both of these folders with no luck. It came down to a whole new install and reloading a back-up of the database.
Note on database restoration: Do NOT restore the ‘user’ or ‘usermeta’ tables with old data on a new installation. Trust me! (lmao) You will not be able to log into the admin area. You can restore all but those two.
I hope this info is helpful to someone. Just remember to always keep a fresh back up of your databases.
