>Warning: SAFE MODE Restriction in effect.
Your PHP module has so-called 'safe_mode' enabled. This mode denies using several important PHP commands, including input/output functions and file upload support. This makes it virtually impossible to run a complex e-commerce software like X-Cart. Please disable the 'safe_mode' switch or ask your ISP to do it. If there is no opportunity to disable 'safe_mode' on your current hosting, we recommend you to change hosting service provider.
The following features can have problems with safe_mode:
1. X-Cart is template-based. Every PHP file reads templates from files. safe_mode does not allow reading files (this is what we mean by "input/output functions"). You can of course fix this by configuring PHP to allow access to particular directory.
2. X-Cart uses external executables to process credit cards. If you need online credit card processing, you will have to configure "safe_mode_exec_dir" to the X-Cart executables directory.
3. PHP with safe_mode turned on do not accept POST requests with enctype=multipart/form-data. This breaks all of our forms having upload controls.
Look here for more technical information:
http://www.php.net/manual/en/features.safe-mode.php