Re: Dell Precision M3800 Touchpad / Synaptics Driver Error
(Edit: I seem to have lost my previous Reply, so this might become a duplicate.)
TL;DR: I have the same problem on Windows 10 version 1709 build 16299, xps 15 9530.
What fixed it for me was to 'Roll Back Driver' for the Dell Touchpad driver from the Device Manager. (Win + X > Device Manager > Mice and other pointing devices)
(Edit2: Note that Image won't load for anonymous users)