Title: markus_b's Replies | WordPress.org --- # markus_b [ ](https://wordpress.org/support/users/markus_b/) * [Profile](https://wordpress.org/support/users/markus_b/) * [Topics Started](https://wordpress.org/support/users/markus_b/topics/) * [Replies Created](https://wordpress.org/support/users/markus_b/replies/) * [Reviews Written](https://wordpress.org/support/users/markus_b/reviews/) * [Topics Replied To](https://wordpress.org/support/users/markus_b/replied-to/) * [Engagements](https://wordpress.org/support/users/markus_b/engagements/) * [Favorites](https://wordpress.org/support/users/markus_b/favorites/) Search replies: ## Forum Replies Created Viewing 4 replies - 1 through 4 (of 4 total) * Forum: [Plugins](https://wordpress.org/support/forum/plugins-and-hacks/) In reply to: [[Events Manager - Calendar, Bookings, Tickets, and more!] preg_match() with custom permalinks caused by Events Manager](https://wordpress.org/support/topic/preg_match-with-custom-permalinks-caused-by-events-manager/) * Thread Starter [markus_b](https://wordpress.org/support/users/markus_b/) * (@markus_b) * [9 years, 9 months ago](https://wordpress.org/support/topic/preg_match-with-custom-permalinks-caused-by-events-manager/#post-7670762) * I’ve taken the following actions: * 1) Verified that the site is running. My test page is ‘access’ a page with some information. -> All is well 2) Enable the extension ‘Events Manager’ -> I get 7 message pairs like this on most pages: Warning: preg_match(): Compilation failed: nothing to repeat at offset 1 in /home/clients/27c815ff576fae5bb4bfa5e1322f2d0e/ web/wp-includes/class-wp.php on line 231 Warning: preg_match(): Compilation failed: nothing to repeat at offset 1 in /home/clients/27c815ff576fae5bb4bfa5e1322f2d0e/ web/wp-includes/class-wp.php on line 232 * 3) Disabled *all* plugins -> I still get the 7 message pairs like this on most pages: Warning: preg_match(): Compilation failed: nothing to repeat at offset 1 in /home/clients/27c815ff576fae5bb4bfa5e1322f2d0e/web/wp-includes/class-wp. php on line 231 Warning: preg_match(): Compilation failed: nothing to repeat at offset 1 in /home/clients/27c815ff576fae5bb4bfa5e1322f2d0e/web/wp-includes/ class-wp.php on line 232 * 4) Enabled the plugins again -> I still get the 7 message pairs like this on most pages: Warning: preg_match(): Compilation failed: nothing to repeat at offset 1 in /home/clients/27c815ff576fae5bb4bfa5e1322f2d0e/web/wp-includes/class-wp. php on line 231 Warning: preg_match(): Compilation failed: nothing to repeat at offset 1 in /home/clients/27c815ff576fae5bb4bfa5e1322f2d0e/web/wp-includes/ class-wp.php on line 232 * 5) Went to Events > Settings > Pages > Event Pages and set the ‘Display events as’ to ‘Pages’ (was set to ‘Posts’) -> All is well, no errors * 6) Went to Events > Settings > Pages > Event Pages and set the ‘Display events as’ to ‘Posts’ -> All is well, no errors * Summary – Enabling Events Manager somehow created the problem. – Disabling all plugins does not eliminate the problem. – Fiddling with Events > Settings > Pages > Event Pages -> Display events does fix it, even with Event Manage installed * Somehow something happens to some data type processed in the loop in class-wp. php around line 23[12] when Events manager is enabled. * Markus * Forum: [Plugins](https://wordpress.org/support/forum/plugins-and-hacks/) In reply to: [[Events Manager - Calendar, Bookings, Tickets, and more!] preg_match() with custom permalinks caused by Events Manager](https://wordpress.org/support/topic/preg_match-with-custom-permalinks-caused-by-events-manager/) * Thread Starter [markus_b](https://wordpress.org/support/users/markus_b/) * (@markus_b) * [9 years, 10 months ago](https://wordpress.org/support/topic/preg_match-with-custom-permalinks-caused-by-events-manager/#post-7670736) * I did not touch these settings at all. * So they are set to the default: * events locations events/categories events/tags * I did play around with parameters in Events > Settings > Pages > Event Pages and set the ‘Display events as’ to ‘Pages’ and the problem went away. Then I set it back to ‘Posts’ and it did not came back. * Maybe changing this set some setting where a default was missing after the installation? * Forum: [Plugins](https://wordpress.org/support/forum/plugins-and-hacks/) In reply to: [[Events Manager - Calendar, Bookings, Tickets, and more!] preg_match() with custom permalinks caused by Events Manager](https://wordpress.org/support/topic/preg_match-with-custom-permalinks-caused-by-events-manager/) * Thread Starter [markus_b](https://wordpress.org/support/users/markus_b/) * (@markus_b) * [9 years, 10 months ago](https://wordpress.org/support/topic/preg_match-with-custom-permalinks-caused-by-events-manager/#post-7670531) * The most recent versions: WordPress is at 4.5.3–fr_FR and Events manager at 5.6.5. * Forum: [Themes and Templates](https://wordpress.org/support/forum/themes-and-templates/) In reply to: [After migration to 2.5 theme index.html does not load](https://wordpress.org/support/topic/after-migration-to-25-my-theme-is-broken/) * Thread Starter [markus_b](https://wordpress.org/support/users/markus_b/) * (@markus_b) * [18 years, 2 months ago](https://wordpress.org/support/topic/after-migration-to-25-my-theme-is-broken/#post-722644) * I just found a separate ‘interesting’ artifact: WP does not display the 404 page if I type a wrong URL like [http://www.domain.com/this/url/does/not/exist](http://www.domain.com/this/url/does/not/exist). Instead it display the two ‘pages’ I have at the moment. * This behavior is the same with my theme and with the WP default theme. * _Markus_ Viewing 4 replies - 1 through 4 (of 4 total)