WHY do not install

[chuzhaoqian]

ERROR Message Report : The country SQL file name must only contain letters,"-","_"



Host Name:localhost
Database Name: kehu
Database Prefix: zkgh_
Database User Name: root
Password:******


Company Name:zkgh_kehu
Chart of Accounts:
Time Zone:
Company logo file:

webERP Admin Account:
Email address:
webERP Password:
Re-enter Password:

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Basically is the default！Why do not install?
PHP Version 5.3.28
MySQL 5.5.37
Nginx 1.6.0