Need help finding error in script - Canada Post Shipping module

I purchased DragDropCart but can't get the Canada Post module to work in it. I have a CPC ID but it's returning an error when trying to purchase an item. Also, the taxes are not generating to the fina ...

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Hey i had also been having some issues with Canada Post... have you checked out Purolators new shipping module? Ive been hearing good things about it from others, thought id share the link: eship.purolator.com hope this helps!