Can't install MediaWiki video extension

Hello,

I'd like to use Kaltura to display video (and allow others to submit video) in my MediaWiki.

I have just installed MediaWiki onto my site (version 1.15.0), and am now trying to install Kaltura MediaWiki extensions.

I have downloaded the "Video-Wiki Extension" from the Kaltrua website, unpacked the tar file (on my local computer), and then FTPed the files (and directories) to my web server. Per the instructions I have updated my LocalSettings.php file. (added "require_once( "$IP/extensions/kaltura_wiki_ext/kaltura_extension.php" );"

Now when I start my Wiki, I get the following error:

Internal error
Detected bug in an extension! Hook efKalturaSetup failed to return a value; should return true to continue hook processing or false to abort.
Backtrace:
#0 /hsphere/local/home/sglicata/soundfundamental.com/mediawiki/includes/parser/Parser.php(178): wfRunHooks()
#1 /hsphere/local/home/sglicata/soundfundamental.com/mediawiki/includes/parser/Parser.php(190): Parser->firstCallInit('ParserFirstCall...', Array)
#2 /hsphere/local/home/sglicata/soundfundamental.com/mediawiki/includes/parser/Parser.php(312): Parser->clearState()
#3 /hsphere/local/home/sglicata/soundfundamental.com/mediawiki/includes/StubObject.php(58): Parser->parse()
#4 /hsphere/local/home/sglicata/soundfundamental.com/mediawiki/includes/StubObject.php(76): StubObject->_call('Welcome to...', Object(Title), Object(ParserOptions), true, true, 14)
#5 [internal function]: StubObject->__call(Array, Array)
#6 /hsphere/local/home/sglicata/soundfundamental.com/mediawiki/includes/Article.php(3557): StubObject->parse('parse', Array)
#7 /hsphere/local/home/sglicata/soundfundamental.com/mediawiki/includes/Article.php(979): Article->outputWikiText('parse', Array)
#8 /hsphere/local/home/sglicata/soundfundamental.com/mediawiki/includes/Wiki.php(450): Article->view('Welcome to...', Object(Title), Object(ParserOptions), true, true, 14)
#9 /hsphere/local/home/sglicata/soundfundamental.com/mediawiki/includes/Wiki.php(63): MediaWiki->performAction('Welcome to...')
#10 /hsphere/local/home/sglicata/soundfundamental.com/mediawiki/index.php(116): MediaWiki->initialize()
#11 {main}

I'm guessing, but is this related to the fact that I unpacked the tar file on my local computer and then uploaded it to my hosting account? I don't have shell access, so can only upload via FTP.

Any help would be appreciated.

Thanks,

Sean