I had been testing the first Beta of Parrot 4.11 XFCE for awhile and started testing Beta 2 today: Parrot-xfce-4.11-beta2_amd64.iso.
First thing I noticed with Beta 2 is that going into Install => Install with GTK GUI got me to a point where the installer could not find the install media. Mind you, this was using VMware Workstation 14.