Set up fan page tab per your instructions. (FB instructions out of date, old)

Get this error when go to "FREE 12 Step Program" TAB.
www.facebook.com/TheWonderWorldProject

Fatal error: Call to undefined function: json_decode() in \\boswinfs05\home\users\web\b824\whl.krististone\Web_Krististone.org\facebook\ww\ScriptLibrary\dmxFacebook.php on line 77

The files are up at krististone.webhost4life.com/Web_Krististone.org/facebook/ww/12StepTab.php They look like they are working OK.

This may have to do with the App Domain defined in the FB app definition. When I take that out no error occurs but also the page doesn't come up either.

Any suggestions?

This was resolved in a live chat session. The user was using an ancient version of PHP(4.4.8) and the extension requires PHP version 5+

Unfortunately it is still not working. I had my hosting company update the server to PHP 5. krististone.webhost4life.com/Web_Krististone.org/facebook/ww/test.php

The facebook page www.facebook.com/TheWonderWorldProject "12 Steps" tab is showing up blank.

Any ideas?

I just thought on a lark that I would add the App Domain: back in and see if I get a weird error again. To my surprise, it works now that I added it.