Tax not displaying

Hi,
Have a new problem.
In my admin site I see all the products with tax but on the store site without tax.
Using ZC 1.3.9 and have checked the tax settings and zone settings and they are ok.
In admin I have:
Tax Decimal Places 0
Display Prices with Tax true
Display Prices with Tax in Admin true
Basis of Product Tax Store
Basis of Shipping Tax Store
Sales Tax Display Status 1
Show Split Tax Lines true

As I´m using an addon of other language maybe the problem is in some php or css file. But don´t know where to look for it.

Also if you try to buy a product it doesn´t show taxes in any step and you get the invoice also without tax.

I don´t know if I should change something for example at my includes/modules php for example in order total? or ot_tax?

But can´t see in any place of the store prices with tax so I supose it would be in some other place?

I have also tryied to config in admin the tax to false and then again to true but no help.

Anybody, any ideas?