Thread:Extension talk:ConfirmEdit/The current version of this extension is not compatible with 1.20/reply (4)

I do not know...

If you can tell me how to see MediaWiki or php Error log or something like this, I can tell you more about this error. For now only one thing I have is that message it browser. Since MediaWiki and other php scripts does not use common web server error log to report errors, I really do not know how to debug it...