1. login with system
2. in "Country Region and City" select VietNam, uncheck "Allow Cities out of List"
3. init a client, set country is VietName, don't input city.
by issue description at https://groups.google.com/forum/#!topic/idempiere/7IDj_fnrQEE, can't create location
code will output location info and make a NPE
reason: language of new client difference language of System because can't get default country