ubuntu 17.10 systemback installer doesn't work properly

Hello,
after installing systemback and generating a live usb stick I tried to reinstall the just saved Ubuntu.
After clicken at install it was nor possible to go on. I choosed a device but the moun point field was blocked.
Without mount point the continue buton remains blocked.
Thus my question: has somebody tested this possibility with this version?

Additional remark: under Ubuntu 16.04 (last "official" version it works perfectl

Thanks