create quote fails with tax NaN

[joebordes]

The best way to keep up with our constant changes is to put your install under git control:

https://youtu.be/IiRWxyZmN5U

if you can't do that, download the latest code from githhub and overwrite your files (if you don't have any changes)

Let me know how it goes.

This may also help:
http://corebos.org/documentation/doku.php?id=en:upgradevt2cb