Title: Andreas's Replies | WordPress.org --- # Andreas [ ](https://wordpress.org/support/users/andreaskarsten/) * [Profile](https://wordpress.org/support/users/andreaskarsten/) * [Topics Started](https://wordpress.org/support/users/andreaskarsten/topics/) * [Replies Created](https://wordpress.org/support/users/andreaskarsten/replies/) * [Reviews Written](https://wordpress.org/support/users/andreaskarsten/reviews/) * [Topics Replied To](https://wordpress.org/support/users/andreaskarsten/replied-to/) * [Engagements](https://wordpress.org/support/users/andreaskarsten/engagements/) * [Favorites](https://wordpress.org/support/users/andreaskarsten/favorites/) Search replies: ## Forum Replies Created Viewing 9 replies - 1 through 9 (of 9 total) * Forum: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/) In reply to: [Dashboard is showing Plugins have updates but when clicked No updates avaialble](https://wordpress.org/support/topic/dashboard-is-showing-plugins-have-updates-but-when-clicked-no-updates-avaialble/) * [Andreas](https://wordpress.org/support/users/andreaskarsten/) * (@andreaskarsten) * [13 years, 2 months ago](https://wordpress.org/support/topic/dashboard-is-showing-plugins-have-updates-but-when-clicked-no-updates-avaialble/#post-3568997) * Hi Venura, I see the same at one of our multi-site installs. Do you have anything installed that manages a bundle of plugins, such as [Commons in a Box](http://commonsinabox.org) for BuddyPress? That seems to be the major difference for us – we see it where we use CBOX, we don’t see it on any other install. * Forum: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/) In reply to: [Usernames with dots not working](https://wordpress.org/support/topic/usernames-with-dots-not-working/) * Thread Starter [Andreas](https://wordpress.org/support/users/andreaskarsten/) * (@andreaskarsten) * [14 years ago](https://wordpress.org/support/topic/usernames-with-dots-not-working/#post-2183153) * Hi piccollopete, * Try using: * preg_match( ‘/[a-z0-9._]+/’, $user_name, $maybe ); * that should work! * Forum: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/) In reply to: [Usernames with dots not working](https://wordpress.org/support/topic/usernames-with-dots-not-working/) * Thread Starter [Andreas](https://wordpress.org/support/users/andreaskarsten/) * (@andreaskarsten) * [14 years, 1 month ago](https://wordpress.org/support/topic/usernames-with-dots-not-working/#post-2183149) * I wouldn’t know how to do that – the official API filters don’t offer a hook that’s useful for this as far as I can see: [http://codex.wordpress.org/Plugin_API/Filter_Reference](http://codex.wordpress.org/Plugin_API/Filter_Reference) * Forum: [Plugins](https://wordpress.org/support/forum/plugins-and-hacks/) In reply to: [[Events Manager - Calendar, Bookings, Tickets, and more!] [Plugin: Events Manager] Update to 5.0.50 breaks entire wp-admin backend](https://wordpress.org/support/topic/plugin-events-manager-update-to-5050-breaks-entire-wp-admin-backend/) * Thread Starter [Andreas](https://wordpress.org/support/users/andreaskarsten/) * (@andreaskarsten) * [14 years, 4 months ago](https://wordpress.org/support/topic/plugin-events-manager-update-to-5050-breaks-entire-wp-admin-backend/#post-2518503) * I know which plugin is faulty so no need to deactivate plugins or revert to the default theme. The only error notice I see is this: * Notice: Undefined property: EM_Event::$start_date in /srv/www/htdocs/www.youthpolicy. org/wp-content/plugins/events-manager/classes/em-event.php on line 1010 * [Marcus](http://profiles.wordpress.org/users/netweblogic/profile/public/), can you help? * Forum: [Plugins](https://wordpress.org/support/forum/plugins-and-hacks/) In reply to: [[Events Manager - Calendar, Bookings, Tickets, and more!] [Plugin: Events Manager] Update to 5.0.50 breaks entire wp-admin backend](https://wordpress.org/support/topic/plugin-events-manager-update-to-5050-breaks-entire-wp-admin-backend/) * Thread Starter [Andreas](https://wordpress.org/support/users/andreaskarsten/) * (@andreaskarsten) * [14 years, 4 months ago](https://wordpress.org/support/topic/plugin-events-manager-update-to-5050-breaks-entire-wp-admin-backend/#post-2518307) * Further information: when the plugin is turned on, all backend pages return an internal server error. The old plugin version was 4.302; dbem_version is 4.213. I tried to trigger an update as instructed on the tutorial page; didn’t help… * Forum: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/) In reply to: [Usernames with dots not working](https://wordpress.org/support/topic/usernames-with-dots-not-working/) * Thread Starter [Andreas](https://wordpress.org/support/users/andreaskarsten/) * (@andreaskarsten) * [14 years, 11 months ago](https://wordpress.org/support/topic/usernames-with-dots-not-working/#post-2182830) * Found it. As per the discussion here: * [http://core.trac.wordpress.org/ticket/17239](http://core.trac.wordpress.org/ticket/17239) * dots in usernames are not allowed. I have changed that now by modifying the function wpmu_validate_user_signup in /wp-includes/ms-functions.php in line 524 from * preg_match( ‘/[a-z0-9]+/’, $user_name, $maybe ); * to * preg_match( ‘/[a-z0-9.]+/’, $user_name, $maybe ); * I don’t like having to modify a core file, but I like even less that in ticket# 17239 it was just decided to disallow dots in usernames. For network sites, which often are associated with username databases, which in turn are often associated with firstname.surname server accounts and email addresses, the dot is an importanrt feature! * Forum: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/) In reply to: [One post is lost – editable, but not visible](https://wordpress.org/support/topic/one-post-is-lost-editable-but-not-visible/) * Thread Starter [Andreas](https://wordpress.org/support/users/andreaskarsten/) * (@andreaskarsten) * [17 years, 3 months ago](https://wordpress.org/support/topic/one-post-is-lost-editable-but-not-visible/#post-997030) * Also of interest and possibly of help to resolve this mystery: * The article appears in search results, as well as in the archive. It is also impossible to call the article by its numeric number. * And I have a screenshot here for you to have a look at, of options such as publishing date, slug, status etc (from the quickedit overview in the admin panel): * [The lost article in the admin panel](http://www.nonformality.org/lost.png) * Forum: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/) In reply to: [Force page reload on every visit](https://wordpress.org/support/topic/force-page-reload-on-every-visit/) * Thread Starter [Andreas](https://wordpress.org/support/users/andreaskarsten/) * (@andreaskarsten) * [19 years, 2 months ago](https://wordpress.org/support/topic/force-page-reload-on-every-visit/#post-542937) * Thank you guys. That should do it! * Forum: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/) In reply to: [Force page reload on every visit](https://wordpress.org/support/topic/force-page-reload-on-every-visit/) * Thread Starter [Andreas](https://wordpress.org/support/users/andreaskarsten/) * (@andreaskarsten) * [19 years, 2 months ago](https://wordpress.org/support/topic/force-page-reload-on-every-visit/#post-542902) * Thank you jetshack. * The problem is of course when users have the option in to never update a webpage allowing for faster web page viewing but preventing a fresh page. * Other possibilities I have discovered meanwhile, next to the refresh metatag, are these: * * Also see this [Microsoft Knowledge Base Article](http://support.microsoft.com/default.aspx?scid=KB;en-us;q222064). I am not so sure about the suggestion to add another header section at the end of a document… * And I am not quite sure which of these tags has which effect on which browser. * Clarification would be appreciated – if clarity exists. And I will try out putting these things in my header soon. Viewing 9 replies - 1 through 9 (of 9 total)