Problem in the Messaging and Download area

Check on a default language pack also. 

What is showing in your system logs?

Logs content is like this. I get the same error in my default language.

Error: Call to undefined method IPS\core\Messenger\Message::canShare() in /home/fmturkiye/public_html/system/Content/Comment.php:1881 Stack trace: #0 /home/fmturkiye/public_html/static/templates/core_front_global.php(2394): IPS\Content\Comment->menu() #1 /home/fmturkiye/public_html/system/Theme/SandboxedTemplate.php(68): IPS\Theme\class_core_front_global->comment() #2 /home/fmturkiye/public_html/static/templates/core_front_global.php(3091): IPS\Theme\SandboxedTemplate->__call() #3 /home/fmturkiye/public_html/system/Theme/SandboxedTemplate.php(68): IPS\Theme\class_core_front_global->commentContainer() #4 /home/fmturkiye/public_html/system/Content/Comment.php(933): IPS\Theme\SandboxedTemplate->__call() #5 /home/fmturkiye/public_html/static/templates/core_front_messaging.php(393): IPS\Content\Comment->html() #6 /home/fmturkiye/public_html/system/Theme/SandboxedTemplate.php(68): IPS\Theme\class_core_front_messaging->conversation() #7 /home/fmturkiye/public_html/applications/core/modules/front/messaging/messenger.php(477): IPS\Theme\SandboxedTemplate->__call() #8 /home/fmturkiye/public_html/system/Dispatcher/Controller.php(139): IPS\core\modules\front\messaging\messenger->manage() #9 /home/fmturkiye/public_html/system/Content/Controller.php(124): IPS\Dispatcher\Controller->execute() #10 /home/fmturkiye/public_html/applications/core/modules/front/messaging/messenger.php(97): IPS\Content\Controller->execute() #11 /home/fmturkiye/public_html/system/Dispatcher/Dispatcher.php(169): IPS\core\modules\front\messaging\messenger->execute() #12 /home/fmturkiye/public_html/index.php(16): IPS\Dispatcher->run() #13 {main}
158
Error: Call to undefined method IPS\core\Messenger\Message::canShare() in /home/fmturkiye/public_html/system/Content/Comment.php:1881 Stack trace: #0 /home/fmturkiye/public_html/static/templates/core_front_global.php(2394): IPS\Content\Comment->menu() #1 /home/fmturkiye/public_html/system/Theme/SandboxedTemplate.php(68): IPS\Theme\class_core_front_global->comment() #2 /home/fmturkiye/public_html/static/templates/core_front_global.php(3091): IPS\Theme\SandboxedTemplate->__call() #3 /home/fmturkiye/public_html/system/Theme/SandboxedTemplate.php(68): IPS\Theme\class_core_front_global->commentContainer() #4 /home/fmturkiye/public_html/system/Content/Comment.php(933): IPS\Theme\SandboxedTemplate->__call() #5 /home/fmturkiye/public_html/static/templates/core_front_messaging.php(393): IPS\Content\Comment->html() #6 /home/fmturkiye/public_html/system/Theme/SandboxedTemplate.php(68): IPS\Theme\class_core_front_messaging->conversation() #7 /home/fmturkiye/public_html/static/templates/core_front_messaging.php(2024): IPS\Theme\SandboxedTemplate->__call() #8 /home/fmturkiye/public_html/system/Theme/SandboxedTemplate.php(68): IPS\Theme\class_core_front_messaging->template() #9 /home/fmturkiye/public_html/applications/core/modules/front/messaging/messenger.php(509): IPS\Theme\SandboxedTemplate->__call() #10 /home/fmturkiye/public_html/system/Dispatcher/Controller.php(139): IPS\core\modules\front\messaging\messenger->manage() #11 /home/fmturkiye/public_html/system/Content/Controller.php(124): IPS\Dispatcher\Controller->execute() #12 /home/fmturkiye/public_html/applications/core/modules/front/messaging/messenger.php(97): IPS\Content\Controller->execute() #13 /home/fmturkiye/public_html/system/Dispatcher/Dispatcher.php(169): IPS\core\modules\front\messaging\messenger->execute() #14 /home/fmturkiye/public_html/index.php(16): IPS\Dispatcher->run() #15 {main}
151
Error: Call to undefined method IPS\core\Messenger\Message::canShare() in /home/fmturkiye/public_html/system/Content/Comment.php:1881 Stack trace: #0 /home/fmturkiye/public_html/static/templates/core_front_global.php(2394): IPS\Content\Comment->menu() #1 /home/fmturkiye/public_html/system/Theme/SandboxedTemplate.php(68): IPS\Theme\class_core_front_global->comment() #2 /home/fmturkiye/public_html/static/templates/core_front_global.php(3091): IPS\Theme\SandboxedTemplate->__call() #3 /home/fmturkiye/public_html/system/Theme/SandboxedTemplate.php(68): IPS\Theme\class_core_front_global->commentContainer() #4 /home/fmturkiye/public_html/system/Content/Comment.php(933): IPS\Theme\SandboxedTemplate->__call() #5 /home/fmturkiye/public_html/system/Content/Item.php(4604): IPS\Content\Comment->html() #6 /home/fmturkiye/public_html/static/templates/core_front_messaging.php(424): IPS\Content\Item->commentForm() #7 /home/fmturkiye/public_html/system/Theme/SandboxedTemplate.php(68): IPS\Theme\class_core_front_messaging->conversation() #8 /home/fmturkiye/public_html/applications/core/modules/front/messaging/messenger.php(477): IPS\Theme\SandboxedTemplate->__call() #9 /home/fmturkiye/public_html/system/Dispatcher/Controller.php(139): IPS\core\modules\front\messaging\messenger->manage() #10 /home/fmturkiye/public_html/system/Content/Controller.php(124): IPS\Dispatcher\Controller->execute() #11 /home/fmturkiye/public_html/applications/core/modules/front/messaging/messenger.php(97): IPS\Content\Controller->execute() #12 /home/fmturkiye/public_html/system/Dispatcher/Dispatcher.php(169): IPS\core\modules\front\messaging\messenger->execute() #13 /home/fmturkiye/public_html/index.php(16): IPS\Dispatcher->run() #14 {main}

I'm 99% certain this has already been fixed for the next beta.