I have a NW 6.5 server running GW 6.5 on SP8. Every week I get an abend while trying to run GWCHECK for routine maintenance. This happened with SP7 too. Can anyone see specifics in this abend log that will help me fix the problem?

Code:
*********************************************************
Novell Open Enterprise Server, NetWare 6.5
PVER: 6.50.08

Server EMAIL halted Wednesday, February 25, 2009   4:00:05.852 am
Abend 1 on P01: Server-5.70.08: Page Fault Processor Exception (Error code 00000000)

Registers:
    CS = 0008 DS = 0010 ES = 0010 FS = 0010 GS = 0010 SS = 0010
    EAX = 00000000 EBX = 957ADD87 ECX = 00000000 EDX = 00000000
    ESI = 00000000 EDI = 00000005 EBP = 99A93D64 ESP = 99A93C20
    EIP = 97A2B300 FLAGS = 00010246 
    97A2B300 668B3E         MOV     DI, [ESI]=?
    EIP in GWENN4.NLM at code start +00423300h
    Access Location: 0x00000000

The violation occurred while processing the following instruction:
97A2B300 668B3E         MOV     DI, [ESI]
97A2B303 6689BC0DE4FEFF MOV     [ECX+EBP+FFFFFEE4], DI
         FF97A2B30B E9C1000000     JMP     97A2B3D1
97A2B310 830304         ADD     [EBX], 00000004
97A2B313 8B13           MOV     EDX, [EBX]
97A2B315 83EA04         SUB     EDX, 00000004
97A2B318 668B32         MOV     SI, [EDX]
97A2B31B 6689B40DE4FEFF MOV     [ECX+EBP+FFFFFEE4], SI
         FF97A2B323 E9A9000000     JMP     97A2B3D1
97A2B328 830304         ADD     [EBX], 00000004



Running process: GWCHK-Worker_1 Process
Thread Owned by NLM: GWPOA.NLM
Stack pointer: 99A93860
OS Stack limit: 99A8B1C0
Scheduling priority: 67371008
Wait state: 3030070  Yielded CPU
Stack: 8A999B58  (NWSA.NSS|ZH_ReadFile64+108)
       --00000000  (LOADER.NLM|KernelAddressSpace+0)
       --95DD1CA3  ?
       --00000001  (LOADER.NLM|KernelAddressSpace+1)
       --00000000  (LOADER.NLM|KernelAddressSpace+0)
       --00000000  (LOADER.NLM|KernelAddressSpace+0)
       --00000001  (LOADER.NLM|KernelAddressSpace+1)
       --00000005  (LOADER.NLM|KernelAddressSpace+5)
       --00000006  (LOADER.NLM|KernelAddressSpace+6)
       --00000000  (LOADER.NLM|KernelAddressSpace+0)
       9769D8BB  (GWENN4.NLM|GWENN4@flmCompareKeys+8B)
       --932A6A2C  ?
       --99A93DAB  ?
       --00000001  (LOADER.NLM|KernelAddressSpace+1)
       --00000000  (LOADER.NLM|KernelAddressSpace+0)
       --99A93D08  ?
       --00000000  (LOADER.NLM|KernelAddressSpace+0)
       --00000004  (LOADER.NLM|KernelAddressSpace+4)
       9769DE15  (GWENN4.NLM|GWENN4@flmVerifyElement+545)
       --99A93DAB  ?
       --932A6A2C  ?
       --00000001  (LOADER.NLM|KernelAddressSpace+1)
       --932A6A2D  ?
       --991F7320  ?
       --99A943E4  ?
       --99A93CA8  ?
       --99A93CD8  ?
       --00000000  (LOADER.NLM|KernelAddressSpace+0)
       80A0BBE0  (LIBC.NLM|DataFromDescriptorUnlocked+40)
       --97F78000  ?
       --0000008D  (LOADER.NLM|KernelAddressSpace+8D)
       --00000000  (LOADER.NLM|KernelAddressSpace+0)
       --00000000  (LOADER.NLM|KernelAddressSpace+0)
       --97F78000  ?
       --99A93CC4  ?
       80A0BC4E  (LIBC.NLM|DataFromDescriptor+1E)
       --97F78000  ?
       80A0BC5C  (LIBC.NLM|DataFromDescriptor+2C)
       --97F78030  ?
       --00000000  (LOADER.NLM|KernelAddressSpace+0)
       --9993B500  ?
       --97E68CA0  ?
       903C1619  (THREADS.NLM|OFSFromDescriptor+19)
       --97F78000  ?
       --0000008D  (LOADER.NLM|KernelAddressSpace+8D)
       --99A93CD8  ?
       --00000000  (LOADER.NLM|KernelAddressSpace+0)
       --00000000  (LOADER.NLM|KernelAddressSpace+0)
       90454CFB  (NLMLIB.NLM|write+27)
       --0000008D  (LOADER.NLM|KernelAddressSpace+8D)
       90454D8E  (NLMLIB.NLM|write+BA)
       --9993B500  ?
       --97E68CA0  ?
       --00000000  (LOADER.NLM|KernelAddressSpace+0)
       --97F78000  ?
       --9997E0E0  ?
       --95DD1C6A  ?
       --95DD1C9E  ?
       --95DD1CA3  ?
       --95DD1CA4  ?
       97A72DC8  (GWENN4.NLM|GWENN4@WpioWrite+48)
       --0000008D  (LOADER.NLM|KernelAddressSpace+8D)
       --99A93D50  ?
       --00000000  (LOADER.NLM|KernelAddressSpace+0)
       --99A93D51  ?
       --99E48CA0  ?
       --9B054AE0  ?
       --99A94558  ?
       97A2AE29  (GWENN4.NLM|GWENN4@WpLogGetNextFile+359)
       --9B054C32  ?
       --00000001  (LOADER.NLM|KernelAddressSpace+1)
       --00000000  (LOADER.NLM|KernelAddressSpace+0)
       --00000000  (LOADER.NLM|KernelAddressSpace+0)
       --99A93D50  ?
       --99A94552  ?
       --99A93D7D  ?
       --99E48C00  ?
       --9B054AE0  ?
       --95DD1C6A  ?
       --99E48CA0  ?
       --9B054AE0  ?
       --99A94584  ?
       97A2ADEE  (GWENN4.NLM|GWENN4@WpLogGetNextFile+31E)
       --99A93D7C  ?
       --95DD1C6A  ?
       -957ADD87  (GWENN4.NLM|GWENN4@From11BToZen+9624)
       --A7240003  ?
       --00B89B00  ?
       --A74400B8  ?
       --00989B96  ?
       --96A74740  ?
       --0000049B  (LOADER.NLM|KernelAddressSpace+49B)
       --0002D800  ?
       --0002D800  ?
       -00019400  (LOADER.NLM|kIDTTableP0+488)
       -00019400  (LOADER.NLM|kIDTTableP0+488)
       --00000100  (LOADER.NLM|KernelAddressSpace+100)
       --4B009100  ?
       --919B96A7  ?
       --00020400  (LOADER.NLM|BIOSDriveCount+6270)