Title: Several Issues after installing 4.5 Last modified: August 31, 2016 --- # Several Issues after installing 4.5 * [Omkar](https://wordpress.org/support/users/domkar1/) * (@domkar1) * [10 years ago](https://wordpress.org/support/topic/several-issues-after-installing-45/) * I am facing several problems after updating my wordpress to 4.5 * My domain: [http://www.MarathiPizza.com](http://www.MarathiPizza.com) * 1) Categories aren’t working. After clicking on the categories (mentioned on my page menue bar) home page gets loaded. * 2) This is a weird problem. I am getting the error while surfing from mobile : * Warning: mysql_connect(): Headers and client library minor version mismatch. Headers:50545 Library:50626 in/home/marat4od/public_html/wp-includes/wp-db.php on line1515 * Warning: Cannot modify header information – headers already sent by (output started at /home/marat4od/public_html/wp-includes/wp-db.php:1515) in /home/marat4od/public_html/ wp-content/plugins/wp-super-cache/wp-cache-phase2.php on line62 * But no such error while surfing from laptop. However, on the dashbord following error is constantly being shown: * Headers and client library minor version mismatch. Headers:50545 Library:50626 in /home/marat4od/public_html/wp-includes/wp-db.php on line 1515 * 3) Plugins : I googled for the second problem mentioned above. Surfed through the wordpress communities I found 3 suggestions – a) deactivate plugins b) update the php c) selecting nd_mysql and nd_mysqli instead of mysql and mysqli . I did all that, still the problem, and – the deactivated plugins are still shown as“ active” in the dashboard with a blue line on the left side. * Omkar Viewing 10 replies - 1 through 10 (of 10 total) * [bdbrown](https://wordpress.org/support/users/bdbrown/) * (@bdbrown) * [10 years ago](https://wordpress.org/support/topic/several-issues-after-installing-45/#post-7314347) * Hi Omkar. You might take a look at the v4.5 Master List: [https://wordpress.org/support/topic/read-this-first-wordpress-45-master-list](https://wordpress.org/support/topic/read-this-first-wordpress-45-master-list) * Thread Starter [Omkar](https://wordpress.org/support/users/domkar1/) * (@domkar1) * [10 years ago](https://wordpress.org/support/topic/several-issues-after-installing-45/#post-7314376) * Hi bdbrown, Thanks mate…but… * As I have said in the third point above, I have already switched to the ND version of PHP, still the problem. * Also, I can’t see any resolution to the Categories problem in the list. * Please guide me to sort this out…would appreciate it much * Thread Starter [Omkar](https://wordpress.org/support/users/domkar1/) * (@domkar1) * [10 years ago](https://wordpress.org/support/topic/several-issues-after-installing-45/#post-7314378) * Hi Guys, the categories problem is resolved. I just refreshed the “permalinks” page in Settings. However, still see the error above the header. * [bdbrown](https://wordpress.org/support/users/bdbrown/) * (@bdbrown) * [10 years ago](https://wordpress.org/support/topic/several-issues-after-installing-45/#post-7314379) * Since you’re running a commercial theme you might post over on the [theme vendor support page.](http://themegrill.com/support/) I don’t know if it’s a theme issue but perhaps they have some information that might shed some light on the issues. Aside from that, commercial themes aren’t supported on these forums. See this section in the WP Codex for additional information: [http://codex.wordpress.org/Forum_Welcome#Commercial_Products](http://codex.wordpress.org/Forum_Welcome#Commercial_Products) * Thread Starter [Omkar](https://wordpress.org/support/users/domkar1/) * (@domkar1) * [10 years ago](https://wordpress.org/support/topic/several-issues-after-installing-45/#post-7314380) * Yes I have contacted them too. But since this is not the theme issue but WordPress 4.5 error, I posted here. * [Ravikumar Patel](https://wordpress.org/support/users/ravipatel/) * (@ravipatel) * [10 years ago](https://wordpress.org/support/topic/several-issues-after-installing-45/#post-7314389) * [@d](https://wordpress.org/support/users/d/).omkar1 For : Warning: mysql_connect(): Headers and client library minor version mismatch. Headers:50545 Library:50626 in/home/marat4od/public_html/wp-includes/wp-db.php on line1515 * ``` $this->dbh = mysql_connect( replace with $this->dbh = @mysql_connect( ``` * Thread Starter [Omkar](https://wordpress.org/support/users/domkar1/) * (@domkar1) * [10 years ago](https://wordpress.org/support/topic/several-issues-after-installing-45/#post-7314427) * Hi Ravi, error still persists, but in a different form now. The error appears when we go to the website without “www”. Please find the screenshots here : * [https://drive.google.com/folderview?id=0B-iPk7IwVE77dXFJTmthaHRFZHc&usp=sharing](https://drive.google.com/folderview?id=0B-iPk7IwVE77dXFJTmthaHRFZHc&usp=sharing) * Also, I got an email from hostgator, they said : * === * Upon checking website issue, I could see that there was issue with xmlrpc.php attack for your website. * However we could see that the following Modsecurity rules blocking the access to the website. * Please refer pasted logs in below link. * === [http://support-tools.com/?9b828c661aed337f#0l5IlM71dHMpwqovq5cHYW49M9ie+XwUzJjGZzkVabQ=](http://support-tools.com/?9b828c661aed337f#0l5IlM71dHMpwqovq5cHYW49M9ie+XwUzJjGZzkVabQ=) === * I have now disabled by adding code in .htaccess file under root directory ‘public_html’ for your website. * Please contact your web-developer to get the website code and get the modsecurity rules checked get the code rectified. * Please note that whitelisting the rule will leave the website vulnerable. * === * Still no solution… * Thread Starter [Omkar](https://wordpress.org/support/users/domkar1/) * (@domkar1) * [10 years ago](https://wordpress.org/support/topic/several-issues-after-installing-45/#post-7314434) * Hi All, * I have added screenshots of all the errors in this location : * [https://drive.google.com/drive/folders/0B-iPk7IwVE77dXFJTmthaHRFZHc](https://drive.google.com/drive/folders/0B-iPk7IwVE77dXFJTmthaHRFZHc) * Summary of error : * 1) Warning messages when website is accessed without “www”. Resolution tried are – 1) php update, plugin deactivations * Warning messages are: === * Warning: mysql_connect(): Headers and client library minor version mismatch. Headers:50545 Library:50626 in /home/marat4od/public_html/wp-includes/wp-db.php on line 1515 * Warning: Cannot modify header information – headers already sent by (output started at /home/marat4od/public_html/wp-includes/wp-db.php:1515) in /home/marat4od/public_html/ wp-content/plugins/wp-super-cache/wp-cache-phase2.php on line 62 * Warning: Cannot modify header information – headers already sent by (output started at /home/marat4od/public_html/wp-includes/wp-db.php:1515) in /home/marat4od/public_html/ wp-includes/pluggable.php on line 1171 * === * 2) Plugin error : Despite deactivating the plugins, the wordpress dashboard shows them as “active”. It shows correct info only after clicking on “All” on the plugins list. * I understand that I am being repetitive here…but I am helpless. I have tried with my theme owners as well as hosting providers. They all are routing me towards WordPress. * Please help me sort this out as soon as possible. * Thread Starter [Omkar](https://wordpress.org/support/users/domkar1/) * (@domkar1) * [10 years ago](https://wordpress.org/support/topic/several-issues-after-installing-45/#post-7314436) * Help guys…I think there’s some serious problem…I am unable to customize the site now…please have a look : * [https://drive.google.com/open?id=0B-iPk7IwVE77dXR6S0ExVzgtMkU](https://drive.google.com/open?id=0B-iPk7IwVE77dXR6S0ExVzgtMkU) * [bdbrown](https://wordpress.org/support/users/bdbrown/) * (@bdbrown) * [10 years ago](https://wordpress.org/support/topic/several-issues-after-installing-45/#post-7314443) * [http://www.agentwp.com/fix-cheatin-uh-error-in-wordpress](http://www.agentwp.com/fix-cheatin-uh-error-in-wordpress) [https://wordpress.org/support/topic/admin-getting-you-are-not-allowed-to-edit-this-post-on-save-draft](https://wordpress.org/support/topic/admin-getting-you-are-not-allowed-to-edit-this-post-on-save-draft) Viewing 10 replies - 1 through 10 (of 10 total) The topic ‘Several Issues after installing 4.5’ is closed to new replies. * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/) * 10 replies * 3 participants * Last reply from: [bdbrown](https://wordpress.org/support/users/bdbrown/) * Last activity: [10 years ago](https://wordpress.org/support/topic/several-issues-after-installing-45/#post-7314443) * Status: not resolved ## Topics ### Topics with no replies ### Non-support topics ### Resolved topics ### Unresolved topics ### All topics