URL: http://www.wikihow.com/index.php?title=Run-Across-and-up-a-Wall&rcid=6069953 Error line: Fatal error: Class ‘SpamDiffTool’ not found in /var/www/html/wiki112a/includes/Article.php on line 901 How to reproduce: Clicked on the diff from recent changes. Logged in: Yes. Browser: Firefox Beta 4 r11 OS: Windows 7 Addons: None. Firefox Beta 4 doesn’t support any addons I normally use at the moment.

OK, it seems there’s some trick that always creates the error. I’m listing all the pages I find the error on here. http://www.wikihow.com/index.php?title=Run-Across-and-up-a-Wall&rcid=6069953 http://www.wikihow.com/User_talk:Narniaprince?redirect=no&rcid=6070013&reverse=&featured= http://www.wikihow.com/index.php?title=The-Rec&rcid=6070162 http://www.wikihow.com/Move-on-Short-Notice?redirect=no&rcid=6070212&reverse=&featured=

I couldn’t go to any wikihow pages, I kept getting the same error you did. I tried opening a new browser and it wouldn’t even let me go to http://www.wikihow.com - it reported a ‘parse error’. It lasted maybe four minutes. I think it was a bug with the whole wikihow system?

Bug appears to be fixed.

Good! Glad it fixed itself. Or someone fixed it somehow. Closing thread.