It may be just a faulty install of your engine.
Maybe try a re-install too.
Otherwise maybe log a post in the bugs section.

Im not implying anything, but if its a hacked copy,
or youve ever had a hacked copy if 3DGS on that computer,
the hacked copies damage some registry settings so even a
legit copy of of 3DGS wont work perfectly on that machine
until a windows re-install, or so Ive been led to believe.