Thank a80026175 for your answer.
Also, I have a few points to add:
I.if you get the message saying: Cannot find AR_base,you should follow to do something.
1.close eNSP
2.open virtual box,if you find anything like "AR_CloneXXXX",right click it and then delete it.
3.start eNSP,click "menu - tools - Register AR_base ".if register failed, maybe you should uninstall eNSP,and delete the
install dir,then install eNSP again.
II.do not start AR_base.when you start a AR, the AR_base should be closed,and a AR_CloneXXX is running.
III.if a AR have been started,and command line information is "the device is running" ,but you can not input anything for a
long time.you should set your windows firewall, open windows firewall,and find eNSP_VBoxServer.exe,click the "public"
column.