Can’t edit any post!

Probably have got gremlins in your last upgrade or upload. i.e. You have either got missing files or mis-named files – Check if the file Diff.php exists somewhere in /business/wp-includes/Text/.

Most likely cause you didnt upgrade properly or upload properly.

Fast response..thx! but I have a fresh install with 2.6!!! and YES the file exists. I’ve checked it.

Having the same problem although I can edit all my existing posts except for two. I really wish someone would offer some guidance here. Is there something possibly in the database that would make a post un-editable?

Is it called Diff.php or diff.php

I can’t edit just one post, an old one, either. On phone with my server/host for an hour, and he couldn’t find any hack. I’ve looked all over here, and it said there is a backdoor for 2.2 where a hacker can get in…but just one post?

The page appears as code instead of visual, and I can’t change even one letter on the page. It runs for about 4 minutes and then comes up the same. All my other post I’ve checked are fine. Any suggestion on this?

Okay, I’ll answer myself! I don’t mind.

My fault, there was a strange thing happening in a plugin called SEO Title Tags, which never worked or helped anyway. There were a bunch of forward slashes in that title box. So for some reason, I was unable to edit that post, and it would hardly even load for me in admin.

Gone now.

I’m having a similar problem. I have two or three posts that I can’t edit. It just takes me to a blank page… no editor on it. Other posts work OK.

I am also having that problem where I only get the html editor and can’t get the visual editor. I’ve tried about a hundred different suggestions found here on the forums and none of them work. the only plugin I have is Subscribe2, and this problem occurs with it disabled.

I am running WP 2.6.1.

Any solution to this problem I am having the same thing happen on my blog. ?? i checked around the internet for work around but none of them seem to work.

I found a solution I downloaded the 2.6.1 beta and downgraded everything worked after I downgraded.

I had this same issue on my blog. It started when I had a partially successful upgrade using the Automatic Upgrade Plugin. Well, I have been able to resolve it. I made a post detailing how I resolve it. You may want to check it out How I resolved my WordPress 2.6.1 upgrade error I pray it works for you.

I am also getting this error on random posts. None of the above suggestiosn apply to me, so maybe I should just reinstall everything. Using 2.6.1. With some posts I just deleted them and created another identical one, but once a post collects comments I am pretty sure that the comments would all go bye bye too if I deleted. I’ll add here, in case it helps anyone think this through, that I had the same problem on my wamp server and it persisted through the port to the online server. So it is probably not a server-specific problem? (I shouldn’t speculate, since I don’t really know). Also, I think I might be able to connect the error to posts that were created before system-wide configuration of some sort, for example activating SEO friendly links.

I can confirm that a reinstall fixed this problem.