Fail to install to HD the Italian iso

After lot of fights, i’ve finally got a booting USB key.

I can launch the live installer, but towards the end, I get the attached error.

Any idea?

I could finally install it.
I had to go through several tries.

Afaict, it failed both at the creation of the image with unetbootin and during the copying of the data to HD with the live-installer. With two different USB sticks, thee ISOs, and two different computers to create the image…

… I never had so many problems when installing a computer…