Upgrade to EB 3.9.15 on joomla 1.5.26 = problem

Hi,

Since this morning I'm trying to upgrade to the latest easyblog version on my joomla 1.5.26, but I keep getting the following message :

Warning: require_once(/home/tshotsh/public_html/media/foundry/3.1/joomla/framework.php) [function.require-once]: failed to open stream: No such file or directory in /home/tshotsh/public_html/components/com_easyblog/constants.php on line 225

Fatal error: require_once() [function.require]: Failed opening required '/home/tshotsh/public_html/media/foundry/3.1/joomla/framework.php' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/tshotsh/public_html/components/com_easyblog/constants.php on line 225

Any idea how this can be fixed ??? :-(

Thx

Fred