Midway game ends abruptly - debug.err

Attached the debug. It happened many times with current game doing nothing but moving ships or pushing next in development screen.
BTW, I have no G drive...

Debug Message: ******* Starting Game Shell *******
Debug Message: Going Fullscreen
Debug Message: RGB in format 5:6:5, Masks reported as f800:7e0:1f
Debug Message: Now Fullscreen
Debug Message: Shell initialization complete
Debug Message: ***** Initializing Game *****
Debug Message: Timer Frequency is 0 369e99
Debug Message: Added fonts: VerdanaWhite11 VerdanaWhite12B VerdanaYellow11 VerdanaLtBlue11 VerdanaGreen11
Debug Message: Added fonts: VerdanaRed11 VerdanaRed12 VerdanaYellow12 VerdanaOrange12 VerdanaLtBlue12
Debug Message: Added fonts: VerdanaDkBlue12 VerdanaLtBlue12B VerdanaOrange12B Verdana00Race11 Verdana01Race11
Debug Message: Added fonts: Verdana02Race11 Verdana03Race11 Verdana04Race11 Verdana05Race11 Verdana00Race12B
Debug Message: Added fonts: Verdana01Race12B Verdana02Race12B Verdana03Race12B Verdana04Race12B Verdana05Race12B
Debug Message: Added fonts: font2 font1 Comic10 Comic12 Comic12B
Debug Message: Added fonts: Comic14 Comic14B Comic16 Comic16B Comic18
Debug Message: Added fonts: Comic18B Celtic14 Celtic12 Celtic10 Basker14
Debug Message: Added fonts: Basker16 BabylonBlue11B BabylonBlue11 BabylonBlue10B ArialGreenB10
Debug Message: Added fonts: ArialYellowB12 ArialLtBlueB12 ArialDkBlueB12 ArialGreenB12 ArialRedB12
Debug Message: Added fonts: ArialWhite12B ArialWhite14 ArialWhite16 ArialOrange12B ArialLtBlue12B
Debug Message: Added fonts: ArialLtBlue14 ArialGreen14 ArialRed14 ArialYellow14 ArialGreen16
Debug Message: Added fonts: ArialYellow16 Arial13B Arial16B2 Arial10 Arial12
Debug Message: Added fonts: Arial12B Arial14 Arial14B Arial16 Arial16B
Debug Message: Added fonts: Arial18 Arial18B GaraWGold11B GaraBW14B GaraW11B
Debug Message: Initializing sound card.
Debug Message: Game Initialization completed.
**** Script Error **** : Data\UP_Issues\AddTradeRoute01.UPISSUE (L:42 C:9) - Unable to find integer upissue stat named ApplysTo
**** Script Error **** : Data\UP_Issues\AddTradeRoute01.UPISSUE (L:43 C:14) - Unable to find integer upissue stat named PreReq
ASSERT ERROR in file g:\projects\pear\source\mwin.cpp at line 594.
Debug Message: Trying to allocate memory of size 0
ASSERT ERROR in file g:\projects\pear\source\memman.cpp at line 288.
ASSERT ERROR in file g:\projects\pear\source\memman.cpp at line 598.
Debug Message: Trying to allocate memory of size 0
ASSERT ERROR in file g:\projects\pear\source\memman.cpp at line 288.
ASSERT ERROR in file g:\projects\pear\source\memman.cpp at line 598.
Debug Message: Arcean Empire (3): Researching: Star Democracy
Debug Message: Make Ship Leave Orbit: Brad Version
Debug Message: Make Ship Leave Orbit: Brad Version
Debug Message: Destroying ship Arcean Empire Freighter 66. Orbiting: 0
Debug Message: Displaying News Event.
Debug Message: Displaying News Event.
Debug Message: Displaying News Event.