FATAL ERROR – ‘WP_Widget’

as per WordPress support I tried to increase my memory from 32 to 64 via wp-settings.php

this has crashed my site and i get errors like below (note: i have already deleted a few plug-ins via FTP but it just reverts to another plugin errordoes anyone know of a fix — i’m was 2.8 something before the issue

Fatal error: Class ‘WP_Widget’ not found in /home/golfscen/public_html/wp-content/plugins/php-code-widget/execphp.php on line 28>

thanks for any help — really in a jam here