Can't open blogs

[motomac]

Just upgraded to 4.1.4.1 and can't open blogs:

Quote

Something went wrong. Please try again.

Error code: EX0

In the log file I see:

Sat, 28 Nov 2015 20:09:32 +0000 (Severity: 2)
1.171.59.39 - https://site.com/blogs/
UnderflowException
0: lang_not_exists__blogs_blog_1
#0 /var/www/admin/data/www/site.com/applications/blog/sources/Blog/Blog.php(581): IPS\_Lang->get('blogs_blog_1')
#1 [internal function]: IPS\blog\_Blog->get_seo_name()
#2 /var/www/admin/data/www/site.com/system/Patterns/ActiveRecord.php(287): call_user_func(Array)
#3 /var/www/admin/data/www/site.com/system/Node/Model.php(455): IPS\Patterns\_ActiveRecord->__get('seo_name')
#4 /var/www/admin/data/www/site.com/system/Theme/Theme.php(692) : eval()'d code(348): IPS\Node\_Model->url()
#5 [internal function]: IPS\Theme\class_blog_front_browse->index(Object(IPS\blog\Blog\Table), Array, Array)
#6 /var/www/admin/data/www/site.com/system/Theme/SandboxedTemplate.php(57): call_user_func_array(Array, Array)
#7 /var/www/admin/data/www/site.com/applications/blog/modules/front/blogs/browse.php(65): IPS\Theme\_SandboxedTemplate->__call('index', Array)
#8 /var/www/admin/data/www/site.com/applications/blog/modules/front/blogs/browse.php(65): IPS\Theme\SandboxedTemplate->index(Object(IPS\blog\Blog\Table), Array, Array)
#9 /var/www/admin/data/www/site.com/system/Dispatcher/Controller.php(94): IPS\blog\modules\front\blogs\_browse->manage()
#10 /var/www/admin/data/www/site.com/applications/blog/modules/front/blogs/browse.php(34): IPS\Dispatcher\_Controller->execute()
#11 /var/www/admin/data/www/site.com/system/Dispatcher/Dispatcher.php(129): IPS\blog\modules\front\blogs\_browse->execute()
#12 /var/www/admin/data/www/site.com/index.php(13): IPS\_Dispatcher->run()
#13 {main}