The country code in the license file does not correspond to the country code (XX) in the stx file

Kine has a very good explanation on this problem.
http://dynamicsuser.net/blogs/kine/archive/2007/11/03/Country-code-in-ENU-fin.stx-file-is-not-W1-anymore.aspx

Anyway, I cannot solve the problem with Kine's suggestion but after understand the concept from Kine's article, I manage to solve it by replacing the Client Folder in the program directory with the Client folder in the Navision Installation CD.