Well, this is a bit odd... there are three Windows 10 computers in the house and I only can get it to work on one. Uru Live is installed on all of them, so all I did was copy the complete Dirtsand folder from my working computer to a USB stick and copied them to a folder on the other machines, then added the shortcut with the -LocalData bit.
I don't get any errors, but as soon as the login screen comes up and before I can even type anything, it vanishes again without any errors. Any ideas what might be wrong?
As always, help is appreciated