I recently did a joomla service patch and everything was still working fine until we rebooted the server. I am completely down right now. Here are the Content Stats products we have installed and the error message we get:

com-contentstats-161-2.5
mod_content_statistics_1.3.2_pro_2.5_admin
plg_contentstats_com_content_1.4.3_2.5
plg docman 2.0-1.4.2-2.5
plg users 1.4.4-2.5

Warning: require_once(F:\digitallibrary\xampp\htdocs\plugins\system\contentstats\contentstats.php) [function.require-once]: failed to open stream: Permission denied in F:\digitallibrary\xampp\htdocs\libraries\joomla\plugin\helper.php on line 171

Fatal error: require_once() [function.require]: Failed opening required 'F:\digitallibrary\xampp\htdocs/plugins/system/contentstats/contentstats.php' (include_path='.;F:\digitallibrary\xampp\php\PEAR') in F:\digitallibrary\xampp\htdocs\libraries\joomla\plugin\helper.php on line 171

Any ideas?

Thank you,
Mark