when logging into the forum you receive this error
Something went wrong. Please try again.
Error code: EX256
when logging into the admin cp you receive this error
ErrorException: Class IPS\core\extensions\core\MemberSync\timer could not be loaded. Ensure it has been properly prefixed with an underscore and is in the correct namespace. (256)
#0 [internal function]: IPS\IPS::errorHandler(256, 'Class IPS\\core\\...', '/home1/twinsspe...', 291, Array)
#1 /home1/twinsspe/public_html/xxx.com/init.php(291): trigger_error('Class IPS\\core\\...', 256)
#2 [internal function]: IPS\IPS::autoloader('IPS\\core\\extens...')
#3 [internal function]: spl_autoload_call('IPS\\core\\extens...')
#4 /home1/twinsspe/public_html/xxx.com/system/Application/Application.php(714): method_exists('IPS\\core\\extens...', 'generate')
#5 /home1/twinsspe/public_html/xxx.com/system/Application/Application.php(308): IPS\_Application->extensions('core', 'MemberSync', true, false)
#6 /home1/twinsspe/public_html/xxx.com/system/Member/Member.php(2977): IPS\_Application::allExtensions('core', 'MemberSync', false)
#7 [internal function]: IPS\_Member->memberSync('onProfileUpdate', Array)
#8 /home1/twinsspe/public_html/xxx.com/init.php(434) : eval()'d code(40): call_user_func_array('parent::memberS...', Array)
#9 /home1/twinsspe/public_html/xxx.com/system/Member/Member.php(342): IPS\rules_hook_ipsMember->memberSync('onProfileUpdate', Array)
#10 /home1/twinsspe/public_html/xxx.com/system/Login/Login.php(401): IPS\_Member->save()
#11 /home1/twinsspe/public_html/xxx.com/applications/core/modules/admin/system/login.php(52): IPS\_Login->authenticate()
#12 /home1/twinsspe/public_html/xxx.com/system/Dispatcher/Controller.php(94): IPS\core\modules\admin\system\_login->manage()
#13 /home1/twinsspe/public_html/xxx.com/system/Dispatcher/Dispatcher.php(129): IPS\Dispatcher\_Controller->execute()
#14 /home1/twinsspe/public_html/xxx.com/admin/index.php(13): IPS\_Dispatcher->run()
have tried upgrading from 4.1.8.1 to 4.1.9, no success, same errors, any ideas or suggestions appreciated