Fatal error after last update. please help

After updating to the last version, I am getting this fatal error. Does any1 else experience this?

Fatal error: Uncaught Error: Class 'N2Pluggable' not found in /home/forge/www.gantic.no/public/wp-content/plugins/smart-slider-3/nextend/library/libraries/storage/section.php:75 Stack trace: #0 /home/forge/www.gantic.no/public/wp-content/plugins/smart-slider-3/nextend/library/settings.php(34): N2StorageSectionAdmin::getAll('system', 'global') #1 /home/forge/www.gantic.no/public/wp-content/plugins/smart-slider-3/nextend/library/settings.php(72): N2Settings::init() #2 /home/forge/www.gantic.no/public/wp-content/plugins/smart-slider-3/nextend/library/loader.php(45): require_once('/home/forge/www...') #3 /home/forge/www.gantic.no/public/wp-content/plugins/smart-slider-3/nextend/library/loader.php(23): N2Loader::importPath('/home/forge/www...') #4 /home/forge/www.gantic.no/public/wp-content/plugins/smart-slider-3/nextend/library/library.php(47): N2Loader::import(Array) #5 /home/forge/www.gantic.no/public/wp-content/plugins/smart-slider-3/nextend/nextend.php(7): require_once('/home/forge/www...') #6 /home/forge/www.gantic.no/pu in /home/forge/www.gantic.no/public/wp-content/plugins/smart-slider-3/nextend/library/libraries/storage/section.php on line 75

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