I've been through most threads on tax issues and solutions but have yet to figure out why my tax will not calculate.
I have just upgraded to the lastest zen cart version. I'm wondering if there is a problem in my database. I upgraded because I was having this issue....when I upgraded- I did a fresh install, then imported my old database into the new system- then upgraded the database.
Before I did this- I did test the 'fresh install' and demo to make sure the tax was working. It did.
THEN I imported my old database and upgraded...
Now in the upgraded old database- I have the same tax issue.

I have set my zones, definition, Class,rates etc..
I've checked "MY STORE" and both 'Basis of Product tax" are set to the Store- which is in GA.
My products are all set to Taxable Goods, and in Admin I can see taxes added when inserting a new product.

I can not see taxes added if I change the store to "Display Prices with tax" - and taxes are not calculated upon checkout. At checkout, I do see a line for "Sales tax" but it is always at $0.

Please advise...

Thank you.