Read the readme file for instruction.
Read the Readme file!
update: why do I always forget for patching the OSInstall to support MBR Scheme, my bad, again.
here is the fix if You want to install to MBR Partition, must be used a flashdrive to install.
download OSInstall.zip from attachment, and copy to
/System/Library/PrivateFrameworks/Install.framework/Frameworks/OSInstall.framework/Versions/A/