If you are running vBulletin Board and you are editing your styles as an example, you may run into this little problem:

Required variables have gone missing and execution can not continue. Please try again.

This error can sometimes occur as a result of Suhosin / Hardened PHP being installed on your server. If you know that you have Suhosin running and you have access to the PHP configuration, try increasing the value of the following variables:

* php_value suhosin.post.max_vars
* php_value suhosin.request.max_vars


This is a common problem with webhosts that utilise with Suhosin, to help prevent this problem we have outlined a quick procedure to disable suhosing so your changes can take effect immediately:-

Create a .htaccess file and add the following command:-

php_flag suhosin.cookie.encrypt Off
php_value suhosin.request.max_vars 2048
php_value suhosin.post.max_vars 2048


Save your .htaccess file and upload it to your /forum/ directory. Next time that you save your changes they should save successfully.
If this effect does not take effect, Please do not hesitate to open a support ticket for further assistance.