There are mixed reviews about whether or not this works.

Does this module work as intended for ZC v1.3.9h.

I am currently using CReinold's v5.0b (w/ AJAX) which isn't working for me as it is allowing customers to add more than that stock quantity remaining into their basket and checkout. (See post: HERE for full description)

Does this version work properly to this aspect?

Thanks for your help.