For security reasons CubeCart prevents errors from being shown on screen. It's obvioulsy crucial to know what the error is to be able to fix it.
There are a few places to look for the detailed error message;
- Login to the admin side of your store and go to "Advanced" >> "Error Log". Have a look at the "System Error Log".
- If that doesn't show anything relevant please check the servers php error log. You can see where errors are logged by going to "Advanced" >> "PHP Info" then look for the value "error_log". Please note that some hosting companies have error loggin disabled to save disk space.
- It maybe possible to force the error on screen. To do this open the classes/debug.class.php file.
Replace it with:
Upload the file back to the server and you may see the error on screen. Please remember to change this back afterwards.