Everything worked great and ufter update to version 3.4.10 i get this error and could not activate plugin...
Warning: require_once(/mnt/webc/d3/17/527517/htdocs/sturm-edv/wp-content/includes/upgrade.php) [function.require-once]: failed to open stream: No such file or directory in /mnt/webc/d3/17/527517/htdocs/sturm-edv/wp-content/install.php on line 39
Fatal error: require_once() [function.require]: Failed opening required '/mnt/webc/d3/17/527517/htdocs/sturm-edv/wp-content/includes/upgrade.php' (include_path='.:/opt/RZphp52/includes') in /mnt/webc/d3/17/527517/htdocs/sturm-edv/wp-content/install.php on line 39
Please help!