Error code when trying to import field boundaries from Surety maps

Oct 26 at 3:36 PM
MapWindow GIS 4.7.909 (9/22/2008)

System.InvalidCastException: Conversion from type 'DBNull' to type 'String' is not valid.
at Microsoft.VisualBasic.CompilerServices.Conversions.ToString(Object Value)
at mwMmpTools.ImportFieldShapefile(String ShpFileName, Int32& NumImpFields, Int32& NumShpFields, String& ErrMsg)
at mwMmpTools.DoImportShpFieldsCmd()
at mwMmpTools.ItemClicked(String ItemName, Boolean& Handled)
at MapWindow.Plugins_IPlugin.ItemClicked(String ItemName)

MapWinUtility (debug reporter) Assmebly Version: 2.0.8794.50727
Operating System: Win32NT
Service Pack:
Major Version: 6
Minor Version: 2
Revision: 0

Build: 9200

Logical Drives: C:\ D:\
System Directory: C:\WINDOWS\system32
Current Directory: C:\Program Files (x86)\MapWindow
Command Line: "C:\Program Files (x86)\MapWindow\MapWindow.exe"
Command Line Args: C:\Program Files (x86)\MapWindow\MapWindow.exe

------------Environment Variables-----------------
PROCESSOR_ARCHITEW6432 == AMD64
COMPUTERNAME == MININT-AVDV1VT
CommonProgramFiles(x86) == C:\Program Files (x86)\Common Files
OneDrive == C:\Users\Steve and Beth\SkyDrive
PROCESSOR_IDENTIFIER == Intel64 Family 6 Model 58 Stepping 9, GenuineIntel
ProgramFiles(x86) == C:\Program Files (x86)
PROCESSOR_REVISION == 3a09
PATHEXT == .COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.MSC
PROJ_LIB == C:\Program Files (x86)\MapWindow\PROJ_NAD
TMP == C:\Users\STEVEA~1\AppData\Local\Temp
TEMP == C:\Users\STEVEA~1\AppData\Local\Temp
LOCALAPPDATA == C:\Users\Steve and Beth\AppData\Local
PUBLIC == C:\Users\Public
ProgramData == C:\ProgramData
USERDOMAIN == MININT-AVDV1VT
Path == C:\ProgramData\Oracle\Java\javapath;C:\Program Files (x86)\Intel\iCLS Client\;C:\Program Files\Intel\iCLS Client\;C:\Program Files\Common Files\Microsoft Shared\Windows Live;C:\Program Files (x86)\Common Files\Microsoft Shared\Windows Live;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\Common Files\Roxio Shared\DLLShared\;C:\Program Files (x86)\Common Files\Roxio Shared\OEM\DLLShared\;C:\Program Files (x86)\Common Files\Roxio Shared\OEM\12.0\DLLShared\;C:\Program Files (x86)\Roxio\OEM\AudioCore\;C:\Program Files (x86)\Windows Live\Shared;C:\Program Files\Dell\Dell Data Protection\Access\Advanced\Wave\Gemalto\Access Client\v5\;C:\Program Files (x86)\NTRU Cryptosystems\NTRU TCG Software Stack\bin\;C:\Program Files\NTRU Cryptosystems\NTRU TCG Software Stack\bin\;C:\Program Files\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\IPT;c:\Program Files (x86)\Microsoft SQL Server\110\Tools\Binn\;c:\Program Files\Microsoft SQL Server\110\Tools\Binn\;c:\Program Files\Microsoft SQL Server\110\DTS\Binn\;C:\Program Files (x86)\ArcGIS\EsriProductionMapping\Desktop10.3\Bin;C:\Program Files (x86)\ArcGIS\Bin;C:\Program Files (x86)\QuickTime\QTSystem\;C:\Users\Steve and Beth\AppData\Local\Microsoft\WindowsApps;
PROCESSOR_LEVEL == 6
BURN_AUTOPLAY == C:\Program Files (x86)\Roxio\OEM\Roxio Burn\
windows_tracing_flags == 3
USERDOMAIN_ROAMINGPROFILE == MININT-AVDV1VT
PSModulePath == C:\WINDOWS\system32\WindowsPowerShell\v1.0\Modules\;c:\Program Files (x86)\Microsoft SQL Server\110\Tools\PowerShell\Modules\
FPS_BROWSER_USER_PROFILE_STRING == Default
CommonProgramFiles == C:\Program Files (x86)\Common Files
HOMEPATH == \Users\Steve and Beth
USERNAME == Steve and Beth
asl.log == Destination=file
ProgramW6432 == C:\Program Files
ProgramFiles == C:\Program Files (x86)
FP_NO_HOST_CHECK == NO
NUMBER_OF_PROCESSORS == 4
SystemRoot == C:\WINDOWS
SESSIONNAME == Console
CommonProgramW6432 == C:\Program Files\Common Files
LOGONSERVER == \MININT-AVDV1VT
USERPROFILE == C:\Users\Steve and Beth
AGSDEVKITJAVA == C:\Program Files (x86)\ArcGIS\DeveloperKit10.3\
AGSDESKTOPJAVA == C:\Program Files (x86)\ArcGIS\Desktop10.3\
HOMEDRIVE == C:
windows_tracing_logfile == C:\BVTBin\Tests\installpackage\csilogfile.log
RCAUTOPLAY == C:\Program Files (x86)\Roxio\OEM\Roxio Central 5\
EMC_AUTOPLAY == C:\Program Files (x86)\Common Files\Roxio Shared\OEM\
APPDATA == C:\Users\Steve and Beth\AppData\Roaming
FPS_BROWSER_APP_PROFILE_STRING == Internet Explorer
PROCESSOR_ARCHITECTURE == x86
OS == Windows_NT
ComSpec == C:\WINDOWS\system32\cmd.exe
SystemDrive == C:
windir == C:\WINDOWS
ALLUSERSPROFILE == C:\ProgramData

------------Performance Info (Bytes)--------------
Private Memory: 69079040
tVirtual Memory: 455962624
Total CPU time: 00:00:16.7031250
Total User Mode CPU time: 00:00:08.5312500

------------Module Info:--------------------------
----Module Name: MapWindow.exe
Path:  C:\Program Files (x86)\MapWindow\MapWindow.exe
Version: 4.7.0909
----Module Name: ntdll.dll
Path:  C:\WINDOWS\SYSTEM32\ntdll.dll
Version: 10.0.15063.608 (WinBuild.160101.0800)
----Module Name: MSCOREE.DLL
Path:  C:\WINDOWS\SYSTEM32\MSCOREE.DLL
Version: 10.0.15063.0 (WinBuild.160101.0800)
----Module Name: KERNEL32.dll
Path:  C:\WINDOWS\System32\KERNEL32.dll
Version: 10.0.15063.608 (WinBuild.160101.0800)
----Module Name: KERNELBASE.dll
Path:  C:\WINDOWS\System32\KERNELBASE.dll
Version: 10.0.15063.608 (WinBuild.160101.0800)
----Module Name: ADVAPI32.dll
Path:  C:\WINDOWS\System32\ADVAPI32.dll
Version: 10.0.15063.0 (WinBuild.160101.0800)
----Module Name: msvcrt.dll
Path:  C:\WINDOWS\System32\msvcrt.dll
Version: 7.0.15063.0 (WinBuild.160101.0800)
----Module Name: sechost.dll
Path:  C:\WINDOWS\System32\sechost.dll
Version: 10.0.15063.0 (WinBuild.160101.0800)
----Module Name: RPCRT4.dll
Path:  C:\WINDOWS\System32\RPCRT4.dll
Version: 10.0.15063.0 (WinBuild.160101.0800)
----Module Name: SspiCli.dll
Path:  C:\WINDOWS\System32\SspiCli.dll
Version: 10.0.15063.674 (WinBuild.160101.0800)
----Module Name: CRYPTBASE.dll
Path:  C:\WINDOWS\System32\CRYPTBASE.dll
Version: 10.0.15063.0 (WinBuild.160101.0800)
----Module Name: bcryptPrimitives.dll
Path:  C:\WINDOWS\System32\bcryptPrimitives.dll
Version: 10.0.15063.138 (WinBuild.160101.0800)
----Module Name: mscoreei.dll
Path:  C:\Windows\Microsoft.NET\Framework\v4.0.30319\mscoreei.dll
Version: 4.7.2046.0 built by: NET47REL1
----Module Name: SHLWAPI.dll
Path:  C:\WINDOWS\System32\SHLWAPI.dll
Version: 10.0.15063.0 (WinBuild.160101.0800)
----Module Name: combase.dll
Path:  C:\WINDOWS\System32\combase.dll
Version: 10.0.15063.296 (WinBuild.160101.0800)
----Module Name: ucrtbase.dll
Path:  C:\WINDOWS\System32\ucrtbase.dll
Version: 10.0.15063.674 (WinBuild.160101.0800)
----Module Name: GDI32.dll
Path:  C:\WINDOWS\System32\GDI32.dll
Version: 10.0.15063.483 (WinBuild.160101.0800)
----Module Name: gdi32full.dll
Path:  C:\WINDOWS\System32\gdi32full.dll
Version: 10.0.15063.674 (WinBuild.160101.0800)
----Module Name: msvcp_win.dll
Path:  C:\WINDOWS\System32\msvcp_win.dll
Version: 10.0.15063.0 (WinBuild.160101.0800)
----Module Name: USER32.dll
Path:  C:\WINDOWS\System32\USER32.dll
Version: 10.0.15063.0 (WinBuild.160101.0800)
----Module Name: win32u.dll
Path:  C:\WINDOWS\System32\win32u.dll
Version: 10.0.15063.608 (WinBuild.160101.0800)
----Module Name: IMM32.DLL
Path:  C:\WINDOWS\System32\IMM32.DLL
Version: 10.0.15063.0 (WinBuild.160101.0800)
----Module Name: kernel.appcore.dll
Path:  C:\WINDOWS\System32\kernel.appcore.dll
Version: 10.0.15063.0 (WinBuild.160101.0800)
----Module Name: VERSION.dll
Path:  C:\WINDOWS\SYSTEM32\VERSION.dll
Version: 10.0.15063.0 (WinBuild.160101.0800)
----Module Name: mscorwks.dll
Path:  C:\Windows\Microsoft.NET\Framework\v2.0.50727\mscorwks.dll
Version: 2.0.50727.8794 (WinRelRS2.050727-8700)
----Module Name: MSVCR80.dll
Path:  C:\WINDOWS\WinSxS\x86_microsoft.vc80.crt_1fc8b3b9a1e18e3b_8.0.50727.9307_none_d0882a20442f72e4\MSVCR80.dll
Version: 8.00.50727.9307
----Module Name: shell32.dll
Path:  C:\WINDOWS\System32\shell32.dll
Version: 10.0.15063.0 (WinBuild.160101.0800)
----Module Name: cfgmgr32.dll
Path:  C:\WINDOWS\System32\cfgmgr32.dll
Version: 10.0.15063.0 (WinBuild.160101.0800)
----Module Name: shcore.dll
Path:  C:\WINDOWS\System32\shcore.dll
Version: 10.0.15063.0 (WinBuild.160101.0800)
----Module Name: windows.storage.dll
Path:  C:\WINDOWS\System32\windows.storage.dll
Version: 10.0.15063.0 (WinBuild.160101.0800)
----Module Name: powrprof.dll
Path:  C:\WINDOWS\System32\powrprof.dll
Version: 10.0.15063.0 (WinBuild.160101.0800)
----Module Name: profapi.dll
Path:  C:\WINDOWS\System32\profapi.dll
Version: 10.0.15063.0 (WinBuild.160101.0800)
----Module Name: mscorlib.ni.dll
Path:  C:\WINDOWS\assembly\NativeImages_v2.0.50727_32\mscorlib\8af4e275cca61579302056fbc4ac484f\mscorlib.ni.dll
Version: 2.0.50727.8794 (WinRelRS2.050727-8700)
----Module Name: ole32.dll
Path:  C:\WINDOWS\System32\ole32.dll
Version: 10.0.15063.296 (WinBuild.160101.0800)
----Module Name: uxtheme.dll
Path:  C:\WINDOWS\system32\uxtheme.dll
Version: 10.0.15063.0 (WinBuild.160101.0800)
----Module Name: mscorjit.dll
Path:  C:\Windows\Microsoft.NET\Framework\v2.0.50727\mscorjit.dll
Version: 2.0.50727.8784 (WinRel.050727-8700)
----Module Name: System.ni.dll
Path:  C:\WINDOWS\assembly\NativeImages_v2.0.50727_32\System\c6656a9e1309f3d09f99afa26fe98f65\System.ni.dll
Version: 2.0.50727.8800 (WinRelRS2.050727-8800)
----Module Name: System.Drawing.ni.dll
Path:  C:\WINDOWS\assembly\NativeImages_v2.0.50727_32\System.Drawing\488788f2ff6839cb836859951094a89a\System.Drawing.ni.dll
Version: 2.0.50727.8784 (WinRel.050727-8700)
----Module Name: MapWinInterfaces.dll
Path:  C:\Program Files (x86)\MapWindow\MapWinInterfaces.dll
Version: 4.7.0.0
----Mo
Oct 26 at 3:38 PM
I should also mention that I am a very basic user of MapWindow GIS - I have to use the older version of the program so that it will link up to my other software.