I upgraded a site to EE 2.8.1 and updated to the latest Field Pack and noticed the EE Control Panel really buggy and slow and have found errors in the log files from the server:
PHP Fatal error: require() [function.require]: Failed opening required '/home/.../public_html/sys/expressionengine/third_party/pt_field_pack/pt_fieldtype.php' (include_path='.:/opt/alt/php53/usr/share/pear:/opt/alt/php53/usr/share/php') in /home/abwac1/public_html/systm/expressionengine/third_party/_pt_dropdown/ft.pt_dropdown.php on line 6
PHP Fatal error: Class PT_Fieldtype contains 1 abstract method and must therefore be declared abstract or implement the remaining methods (EE_Fieldtype::display_field) in Unknown on line 0
PHP Fatal error: require_once() [function.require]: Failed opening required '/home/.../public_html/sys/expressionengine/third_party/pt_switch/config.php' (include_path='.:/opt/alt/php53/usr/share/pear:/opt/alt/php53/usr/share/php') in /home/.../public_html/sys/expressionengine/third_party/_pt_switch/ft.pt_switch.php on line 4
PHP Fatal error: Class 'Matrix_ft' not found in /home/.../public_html/sys/expressionengine/libraries/api/Api_channel_fields.php on line 365
Anyone else getting something similar? would love to know of a fix or if this has been reported and ready for updating.