During to create emulator, I couldn't get it.
There is emulator-manager.log.
[2013.8.15 23:3:31][WARNING][VMsMainView.createEmualtor] Failed to create Emulator (test01)
Error while running 'qemu-img'. Exit value : 133
You can get more information in log file (~~~~~~~/tizen-sdk-data/emulator-vms/vms/emulator-manager)