JFBConnect v4.3.4 Uninstall

I have a Joomla site running v2.5.16 and JFBConnect 4.3.4 and want to migrate to Joomla 3.x.

JFBConnect seems to be causing problems with the Joomla update (not surprising I guess since it is an old version). I'm doing the migration testing on a development server so could that be part of the problem? I was thinking I'd just uninstall it and install the current version after migrating the site, but when I try to uninstall the component, I get the following:

Warning: require_once(/home2/xxxx/public_html/dev_folder/components/com_jfbconnect/libraries/facebook.php) [function.require-once]: failed to open stream: No such file or directory in /home2/xxxx/public_html/dev_folder/plugins/system/jfbcsystem/jfbcsystem.php on line 50

Fatal error: require_once() [function.require]: Failed opening required '/home2/xxxx/public_html/dev_folder/components/com_jfbconnect/libraries/facebook.php' (include_path='.:/opt/php53/lib/php') in /home2/xxxx/public_html/dev_folder/plugins/system/jfbcsystem/jfbcsystem.php on line 50

Once I get the error I have to restore the site from backup because I can't get past it. If I renew my subscription and update JFBConnect first, would that allow me to do the Joomla upgrade?

Thanks,
Ed

Thanks Mel, I was able to get all SourceCoast modules uninstalled.