Okay, some more clues...
These errors I only get on the desktop machine:
22:33:21.02 SOUND -- Initializing ...
22:33:21.03 Error, could not open lua emitter file: data:sound\Emitters.ems
22:33:21.03 SOUND -- Failed post initialization!
22:33:21.03 SOUND -- Shutting down ...
22:33:21.06 SOUND -- Shutdown completed!
22:33:21.06 GAME PHYSICS -- Can't load 'physics_global.lua!' (assuming defaults)
22:33:21.23 GAME -- (WorldManager) Cannot find original scenario "(2-4)_Compound" referenced from data:scenarios\tow\battles\1943_german\compoundgerman.scenref
22:33:21.23 GAME -- (WorldManager) Could not load .scenref file D. Please check syntax.
22:33:21.23 GAME -- (WorldManager) Cannot find original scenario "2P_Divide" referenced from data:scenarios\tow\battles\1943_german\dividegerman.scenref
22:33:21.23 GAME -- (WorldManager) Could not load .scenref file D. Please check syntax.
22:33:21.23 GAME -- (WorldManager) Cannot find original scenario "6p_MudRoad311" referenced from data:scenarios\tow\battles\1943_german\mudroad.scenref
22:33:21.23 GAME -- (WorldManager) Could not load .scenref file D. Please check syntax.
22:33:21.23 GAME -- (WorldManager) Cannot find original scenario "Volga_timber_yard" referenced from data:scenarios\tow\battles\1943_german\volgatimberyardgerman.scenref
22:33:21.23 GAME -- (WorldManager) Could not load .scenref file D. Please check syntax.
22:33:21.23 GAME -- (WorldManager) Cannot find original scenario "(2-4)_Compound" referenced from data:scenarios\tow\battles\1943_soviet\compound.scenref
22:33:21.23 GAME -- (WorldManager) Could not load .scenref file D. Please check syntax.
22:33:21.23 GAME -- (WorldManager) Cannot find original scenario "6p_Mud_Valley" referenced from data:scenarios\tow\battles\1943_soviet\muddyvalley.scenref
22:33:21.23 GAME -- (WorldManager) Could not load .scenref file D. Please check syntax.
22:33:21.23 GAME -- (WorldManager) Cannot find original scenario "6p_MudRoad311" referenced from data:scenarios\tow\battles\1943_soviet\mudroad_soviets.scenref
22:33:21.23 GAME -- (WorldManager) Could not load .scenref file D. Please check syntax.
22:33:21.23 GAME -- (WorldManager) Cannot find original scenario "Volga_timber_yard" referenced from data:scenarios\tow\battles\1943_soviet\volgatimberyard.scenref
22:33:21.23 GAME -- (WorldManager) Could not load .scenref file D. Please check syntax.
22:33:21.23 GAME -- (WorldManager) Cannot find original scenario "2P_COH2_Resistance" referenced from data:scenarios\tow\battles\1942_soviet\resistance.scenref
22:33:21.23 GAME -- (WorldManager) Could not load .scenref file D. Please check syntax.
22:33:21.23 GAME -- (WorldManager) Cannot find original scenario "anotherstalingrad" referenced from data:scenarios\tow\battles\1942_soviet\stalingradai.scenref
22:33:21.23 GAME -- (WorldManager) Could not load .scenref file D. Please check syntax.
22:33:21.23 GAME -- (WorldManager) Cannot find original scenario "2_4_TerekLines" referenced from data:scenarios\tow\battles\1942_soviet\tereklines.scenref
22:33:21.23 GAME -- (WorldManager) Could not load .scenref file D. Please check syntax.
22:33:21.24 GAME -- (WorldManager) Cannot find original scenario "DonRiverAiBattle" referenced from data:scenarios\tow\battles\1942_german\donriver.scenref
22:33:21.24 GAME -- (WorldManager) Could not load .scenref file D. Please check syntax.
22:33:21.24 GAME -- (WorldManager) Cannot find original scenario "4P_Road_to_Kharkov_Ai_Battle" referenced from data:scenarios\tow\battles\1942_german\kharkov.scenref
22:33:21.24 GAME -- (WorldManager) Could not load .scenref file D. Please check syntax.
22:33:21.24 GAME -- (WorldManager) Cannot find original scenario "8p_COH2_TheSteppes_Frontline" referenced from data:scenarios\tow\battles\1941_german\1941_crimea.scenref
22:33:21.24 GAME -- (WorldManager) Could not load .scenref file D. Please check syntax.
22:33:21.24 GAME -- (WorldManager) Cannot find original scenario "8P_COH2_City_17_Spring_Frontline" referenced from data:scenarios\tow\battles\1941_german\1941_kharkov.scenref
22:33:21.24 GAME -- (WorldManager) Could not load .scenref file D. Please check syntax.
22:33:21.24 GAME -- (WorldManager) Cannot find original scenario "4p_kholodnaya_ferma_battlefield" referenced from data:scenarios\tow\battles\1941_german\1941_leningrad.scenref
22:33:21.24 GAME -- (WorldManager) Could not load .scenref file D. Please check syntax.
22:33:21.24 GAME -- (WorldManager) Cannot find original scenario "4P_COH2_OkaRiver_Frontline" referenced from data:scenarios\tow\battles\1941_german\1941_oka.scenref
22:33:21.24 GAME -- (WorldManager) Could not load .scenref file D. Please check syntax.
22:33:21.24 GAME -- (WorldManager) Cannot find original scenario "4p_minsk_pocket_frontline" referenced from data:scenarios\tow\battles\1941_soviet\1941_minsk.scenref
22:33:21.24 GAME -- (WorldManager) Could not load .scenref file D. Please check syntax.
22:33:21.24 GAME -- (WorldManager) Cannot find original scenario "4p_moscow_outskirts_frontline" referenced from data:scenarios\tow\battles\1941_soviet\1941_moscowapproach.scenref
22:33:21.24 GAME -- (WorldManager) Could not load .scenref file D. Please check syntax.
22:33:21.24 GAME -- (WorldManager) Cannot find original scenario "4p_rzhev_frontline" referenced from data:scenarios\tow\battles\1941_soviet\1941_moscowlines.scenref
22:33:21.24 GAME -- (WorldManager) Could not load .scenref file D. Please check syntax.
22:33:21.24 GAME -- (WorldManager) Cannot find original scenario "4p_prypiat_battlefield" referenced from data:scenarios\tow\battles\1941_soviet\1941_pripyat.scenref
22:33:21.24 GAME -- (WorldManager) Could not load .scenref file D. Please check syntax.
22:33:21.26 GAME -- (WorldManager) Cannot find original scenario "Training_Grounds" referenced from data:scenarios\tutorial\training_grounds\training_grounds_eastgerman.scenref
22:33:21.26 GAME -- (WorldManager) Could not load .scenref file D. Please check syntax.
22:33:21.26 GAME -- (WorldManager) Cannot find original scenario "Training_Grounds" referenced from data:scenarios\tutorial\training_grounds\training_grounds_soviet.scenref
22:33:21.26 GAME -- (WorldManager) Could not load .scenref file D. Please check syntax.
22:33:21.26 GAME -- (WorldManager) Cannot find original scenario "Training_Grounds" referenced from data:scenarios\tutorial\training_grounds\training_grounds_westgerman.scenref
22:33:21.26 GAME -- (WorldManager) Could not load .scenref file D. Please check syntax.
It looks like WorldBuilder has trouble locating some data files. Hmm...