I need help urgently

[sn4g]

EDIT: this is what line 95 has

$templates->myn_cache($db->escape_string($template_cache));

I'm getting this issue with the Mynetwork plugin for mybb

Fatal error: Call to undefined method templates::myn_cache() in /home/sngtv/public_html/forums/inc/network/core/m_postrep.php on line 95

So when I goto the mynetwork section



and then I click core I get this


I cant install it or uninstall it.

Is there a way to back up all posts,pms,threads and users and just start fresh again?