virtualbox.org

Host : Ubuntu 17.04
Guest : Ubuntu 16.04

Virtual Box : 5.2
Guest additions: VBoxGuestAdditions_5.2.1-118918.iso
Extensions also installed .

When I hit the capturing button , the window dissapears and the VM goes into an Aborted state.

5.1.30 works fine. (so I am back to this one for now)

With the VM fully shut down, right click and "Show Log" in the GUI, save "VBox.log" (no other file) to a zip, and attach the zip here.