error/can't activate

I had diactivated with together with every plugin so that i can upgrade to 4.4, but now, after trying to activate, this happens:
Warning: require_once(C:\Inetpub\vhosts\alchemylife.gr\httpdocs\wp-content\plugins\rating-widget/workflow/start.php): failed to open stream: No such file or directory in C:\Inetpub\vhosts\alchemylife.gr\httpdocs\wp-content\plugins\rating-widget\rating-widget.php on line 35

Fatal error: require_once(): Failed opening required ‘C:\Inetpub\vhosts\alchemylife.gr\httpdocs\wp-content\plugins\rating-widget/workflow/start.php’ (include_path=’.;.\includes;.\pear’) in C:\Inetpub\vhosts\alchemylife.gr\httpdocs\wp-content\plugins\rating-widget\rating-widget.php on line 35

https://www.ads-software.com/plugins/rating-widget/