FIX: My VirtualBox VMs folder was a symlink. I am not sure wether it was a broken link or if the virtualbox just couldnt handle the fact that the fodler was a symlink. But I deleted theVirtualBox VMs folder, created a new folder an now it works.
FIX: My VirtualBox VMs folder was a symlink. I am not sure wether it was a broken link or if the virtualbox just couldnt handle the fact that the fodler was a symlink. But I deleted theVirtualBox VMs folder, created a new folder an now it works.