Hi again Diva,

I'm back in business! Tried winmerge, 1 file at a time and found the file causing the problem was:

admin/includes/languages/english.php

The only line different to the working version according to winmerge was:

define('TEXT_PRODUCT_WEIGHT_UNIT','kgs');

I changed lbs to kgs the other day but I can't believe that caused it so I guess there must have been some corruption in the file when I saved it.

It's working fine with kgs now ok.

I noticed on another forum someone had a similar problem with the file application_top.

Thanks again for your help. Cliff.