Hello, Sarmady.
Sorry for the delay in responding.
I saw that really the option of installing the system is in trouble. I had never noticed because I use the livecd in virtualbox and when i will turn off the machine, i save the state of it using the virtualbox. Had never tried to install, thinking that would not have problems in doing this.
This problem is due to remastersys program that generated the iso image and has not been able of enable the properly install of the linux. Unfortunately, i not found solution for this.
I'm already preparing the new version of Liowsn Project. It will be an OVA/OVF/VHD/VMDK (virtual appliance). This will greatly ease the installation, with the functionality the import of the Virtual Machine (VM).
To resolve your problem, I recommend only save the state of the machine on virtualbox (using the livecd iso) when you power off the operacional system.
I will soon launch the new version of the project.
Big hug.