zmove,

you could try putting the following before the foreach statement on 816:

if (!$form["attributes"]) {
return;
}

I will upload a new tar file and include this. The new files have other fixes mentioned above. This might result in the "message area" of a product to be a textfield as opposed to a textarea. If so, you could try changing the "weight" of the gift certificate module. Do let me know what you had to do to get it working.

Cheers