Default Tax Not Affecting

[jimisfou]

Hello to all,
I have a tax rule. Until Friday I put the final price and I click Calculate the cost price and the rule works fine.
But today I try to put the final price and I click cost the calculate the cost price and the tax doesn't do nothing.
I haven't update the VM or Joomla.

What's going wrong with the VM?
Can you please help me?

I have the lastest Vm & Joomla.

[joomdev2]

do you get an error or what? It could be that the tax rule is removed. Unless this was something you customized... Updates shouldn't have any effect on this either.

[GJC Web Design]

have u double checked the rule config?
tried making a new one and see if it works?