I've installed the 4.7 version on Zen-cart 1.3.9h and it's not working - no stock is being substracted according to my client and also in the stock by attributes page in admin the two lines (overall and variant) do not tally.

The site is set to subtract stock - obvious first question...

I'm not sure how to sort this out - any help or experiences would be appreciated. I've used an earlier version which worked fine..

Andy