I installed as normal, and gave Admins and Moderators access to modules. I then got the errors described below
Even after I disabled it gave a lot of errors and the forum was not usable until I cleared server cache.
Error: Call to undefined method IPS\forums\Topic\Post::canBookmark() (0)
#0 /home/kjiver/fjellforum.no/system/Theme/SandboxedTemplate.php(56): IPS\Theme\class_forums_front_topics->post(Object(IPS\forums\Topic), Object(IPS\forums\Topic\Post), 'topic_comment', 'forums', 'forums', 'forums_Topic')
#1 /home/kjiver/fjellforum.no/system/Theme/Theme.php(809) : eval()'d code(1755): IPS\Theme\_SandboxedTemplate->__call('post', Array)
#2 /home/kjiver/fjellforum.no/system/Theme/SandboxedTemplate.php(56): IPS\Theme\class_forums_front_topics->postContainer(Object(IPS\forums\Topic), Object(IPS\forums\Topic\Post), Array, '')
#3 /home/kjiver/fjellforum.no/system/Theme/Theme.php(809) : eval()'d code(3860): IPS\Theme\_SandboxedTemplate->__call('postContainer', Array)
#4 /home/kjiver/fjellforum.no/system/Theme/SandboxedTemplate.php(56): IPS\Theme\class_forums_front_topics->topic(Object(IPS\forums\Topic), Array, NULL, Array, NULL, NULL, Array)
#5 /home/kjiver/fjellforum.no/applications/forums/modules/front/forums/topic.php(392): IPS\Theme\_SandboxedTemplate->__call('topic', Array)
#6 /home/kjiver/fjellforum.no/system/Dispatcher/Controller.php(96): IPS\forums\modules\front\forums\_topic->manage()
#7 /home/kjiver/fjellforum.no/system/Content/Controller.php(50): IPS\Dispatcher\_Controller->execute()
#8 /home/kjiver/fjellforum.no/applications/forums/modules/front/forums/topic.php(39): IPS\Content\_Controller->execute()
#9 /home/kjiver/fjellforum.no/system/Dispatcher/Dispatcher.php(146): IPS\forums\modules\front\forums\_topic->execute()
#10 /home/kjiver/fjellforum.no/index.php(12): IPS\_Dispatcher->run()
#11 {main}
back-trace
#0 /home/kjiver/fjellforum.no/init.php(523): IPS\_Log::log('Error: Call to ...', 'uncaught_except...')
#1 [internal function]: IPS\IPS::exceptionHandler(Object(Error))
#2 {main}