After some editing of php code, I managed to get the (a) editing of pages and (b) the blank special pages all working.
Now my issue is that after adding a new stream and then trying to edit the Streams:pagename, I get the following error:

Catchable fatal error: Argument 2 passed to SMWSQLStore2::getPropertyValues() must be an instance of SMWDIProperty, instance of Title given, called in /var/www/wiki/extensions/MetavidWiki/includes/MV_MetavidInterface/MV_MetavidInterface.php on line 129 and defined in /var/www/wiki/extensions/SemanticMediaWiki/includes/storage/SMW_SQLStore2.php on line 194

Any suggestions on fixing this issue?
Regards
Ioannis


From: ioannisc@hotmail.com
To: metavid-l@lists.wikimedia.org
Subject: Requst for info about metavid installation
Date: Wed, 28 Nov 2012 10:04:47 +0000

Dear friends,

I have recently attempted to implement the metavid / mediawiki solution for educational purposes.
My setup consists of a linux host, mediawiki (version 1.20), semantic mediawiki (version 1.7.1) and metavid (version beta 1.0rc1, downloaded from svn).
Although mediawiki with semantic mediawiki installed works properly, when metavid is activated in the localsettings file, I get the following two errors:
a) When I try to edit a wiki page I get an un-handled exception error.
b) The special pages link  in mediawiki opens a blank page.   I have tried various solutions for this problem that I found in posts from other users, but with no success.

I have been unable to locate a document that explains which versions of mediawiki/semantic mediawiki/metavid are the proper ones for a successful installation, can you please point me to any such information so I can implement my project?

Regards
Ioannis