Final retail price does not show up in the back-end!

[mojtabam]

Hi,

 

I am using prestashop 1.5.4.1 on a remote server. ( I have upgraded from prestashop 1.5.3)

 

The problem is that, the final retail price does not show anything in the back-end, as shown in the attached file.

The other problem is that, my shop shows GST (5%) taxes by default and later at the checkout it adds the remaining tax (8%, HST) for customers from Ontario.

 

Does anybody know how can I fix it?

I just want my shop calculate all the tax, e.g. 13% for Ontario at checkout process.

 

 

Thank you very much,

Mojtaba