Weight based shipping module not working

I have found that when I enable the Weight Based shipping module, the site appears to crash when trying to estimate shipping or complete checkout. It doesn't show any shipping options and and just seems to crash, even though my other shipping options were showing when this module was not enabled.

I have checked that all the zones, etc are set up correctly. Has any one else come across this? Is this a bug? Please does anyone have any suggestions?

I have version 1.5.2.1

When I checked the Error log it says:
PHP Notice: Error: Could not load language shipping/weight! in /home/khaleeji/public_html/vqmod/vqcache/vq2-system_library_language.php on line 41

If you're using a non-English language, you need to make sure the /catalog/language/YOURLANGUAGE/shipping/weight.php file is present.

Thanks for the reply.

My website is all in English. It is www.KhaleejiAbaya.Com. The Royal Mail shipping module works fine, just when I enable this Weight Based module, the page just crashes when trying to view the shipping options. Where do I get the shipping/weight file from?

It's included in the main OpenCart download. You should already have it. If you don't, you should re-download OpenCart and upload that file.

I didn't have it in my original download but someone on here sent me the file and the module works now.

Many thanks for your help and the information