Mission Editor 2.18 Patch 4: Warp Segment Lockups

[MachNix]

When flying an Offline Practice Mission, the screen freezes when the flight reaches a warp segment.  Sometimes I can go Ctrl-Alt-Delete and kill the process but usually have to force the computer to power down.

I had some missions that where built using version 2.17 that started locking up after the AH 2.18 update.  When the new Mission Editor came out, I tried opening those missions and using the File > Build Res Library to see if that would fix them -- it did not.  I then built a simple mission with a warp segment using the new editor and it too locks up at the warp segment during Offline Practice.  The missions run okay from the Mission Editor but not in the game.

I sent the mission to one other player and he has the same screen freeze at the warp segment.

[Hack9]

I have also encountered this freeze problem with the v2.18 Mission Editor; AH locks up and remains unresponsive for several minutes, or indefinitely, when a warp segment begins.  On one occasion the mission did resume after a fairly long freeze, but on all other attempts I've had to shut down Aces High manually using the Windows Task Manager.  This only occurs when the mission is run in AH; no problems with warp segments when running them in the ME. 

Both converted 2.17 missions and newly created 2.18 missions render the same freeze result, but I have found that this only happens when the player aircraft's flight enters the warp segment.  On non-player routes & flights, the warp segments work normally in the game. I created a mission where enemy aircraft warp but the player does not and the warp segments performed without a hitch.

Graphic detail is set to default/middle of the road settings with display set to 1280 x 800 viewed on a 1280 x 1024 external monitor. 
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System Information
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Time of this report: 3/23/2010, 20:11:17
       Machine name: DJMG3XD1
   Operating System: Windows XP Home Edition (5.1, Build 2600) Service Pack 3 (2600.xpsp_sp3_gdr.091208-2036)
           Language: English (Regional Setting: English)
System Manufacturer: Dell Inc.
       System Model: Inspiron 1520                   
               BIOS: Phoenix ROM BIOS PLUS Version 1.10 A09
          Processor: Intel(R) Core(TM)2 Duo CPU     T5250  @ 1.50GHz (2 CPUs)
             Memory: 3838MB RAM
          Page File: 689MB used, 4518MB available
        Windows Dir: C:\WINDOWS
    DirectX Version: DirectX 9.0c (4.09.0000.0904)
DX Setup Parameters: Not found
     DxDiag Version: 5.03.2600.5512 32bit Unicode
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Display Devices
---------------
        Card name: NVIDIA GeForce 8400M GS   
     Manufacturer: NVIDIA
        Chip type: NVxx
         DAC type: Integrated RAMDAC
       Device Key: Enum\PCI\VEN_10DE&DEV_0427&SUBSYS_01F11028&REV_A1
   Display Memory: 256.0 MB
     Current Mode: 1280 x 1024 (32 bit) (60Hz)
          Monitor: Plug and Play Monitor
  Monitor Max Res: 1600,1200
      Driver Name: nv4_disp.dll
   Driver Version: 6.14.0011.0128 (English)
      DDI Version: 9 (or higher)
Driver Attributes: Final Retail
 Driver Date/Size: 6/6/2007 17:34:38, 5465472 bytes
      WHQL Logo'd: Yes
  WHQL Date Stamp: n/a
              VDD: n/a
         Mini VDD: nv4_mini.sys
    Mini VDD Date: 6/6/2007 17:34:38, 6345472 bytes
Device Identifier: {D7B71E3E-4767-11CF-1873-FA2100C2CB35}
        Vendor ID: 0x10DE
        Device ID: 0x0427
        SubSys ID: 0x01F11028
      Revision ID: 0x00A1
      Revision ID: 0x00A1
      Video Accel: ModeMPEG2_A ModeMPEG2_B ModeMPEG2_C ModeMPEG2_D