Server crash after upgrade to 7.1.36366

I am upgrading a clients test system from v2009 to v2013 R2. I have upgraded to the base 2013R2 and it works fine. However when I then apply CU6 the conversion works but then when I try to start the service it crashes. Can anyone shed any light on this I would appreciate it very much as I need to finish this today, thanks.

The report.wer shows the following:

Version=1
EventType=APPCRASH
EventTime=130719299832155424
ReportType=2
Consent=1
ReportIdentifier=f56278e0-d475-11e4-8cbc-001321f1b594
IntegratorReportIdentifier=f56278df-d475-11e4-8cbc-001321f1b594
Response.type=4
Sig[0].Name=Application Name
Sig[0].Value=Microsoft.Dynamics.Nav.Server.exe
Sig[1].Name=Application Version
Sig[1].Value=7.1.36366.0
Sig[2].Name=Application Timestamp
Sig[2].Value=533b28f3
Sig[3].Name=Fault Module Name
Sig[3].Value=KERNELBASE.dll
Sig[4].Name=Fault Module Version
Sig[4].Value=6.1.7601.18015
Sig[5].Name=Fault Module Timestamp
Sig[5].Value=50b8479b
Sig[6].Name=Exception Code
Sig[6].Value=e0434352
Sig[7].Name=Exception Offset
Sig[7].Value=0000000000009e5d
DynamicSig[1].Name=OS Version
DynamicSig[1].Value=6.1.7601.2.1.0.272.7
DynamicSig[2].Name=Locale ID
DynamicSig[2].Value=2057
DynamicSig[22].Name=Additional Information 1
DynamicSig[22].Value=7878
DynamicSig[23].Name=Additional Information 2
DynamicSig[23].Value=787854380ac502069a277b7321ff9e3f
DynamicSig[24].Name=Additional Information 3
DynamicSig[24].Value=f71d
DynamicSig[25].Name=Additional Information 4
DynamicSig[25].Value=f71d629042a87fe3e1c1c515dad1788a
UI[2]=C:\Program Files\Microsoft Dynamics NAV\71\Service\Microsoft.Dynamics.Nav.Server.exe
UI[5]=Check online for a solution (recommended)
UI[6]=Check for a solution later (recommended)
UI[7]=Close
UI[8]=Microsoft Dynamics NAV Server stopped working and was closed
UI[9]=A problem caused the application to stop working correctly. Windows will notify you if a solution is available.
UI[10]=&Close
LoadedModule[0]=C:\Program Files\Microsoft Dynamics NAV\71\Service\Microsoft.Dynamics.Nav.Server.exe
LoadedModule[1]=C:\Windows\SYSTEM32\ntdll.dll
LoadedModule[2]=C:\Windows\SYSTEM32\MSCOREE.DLL
LoadedModule[3]=C:\Windows\system32\KERNEL32.dll
LoadedModule[4]=C:\Windows\system32\KERNELBASE.dll
LoadedModule[5]=C:\Windows\system32\ADVAPI32.dll
LoadedModule[6]=C:\Windows\system32\msvcrt.dll
LoadedModule[7]=C:\Windows\SYSTEM32\sechost.dll
LoadedModule[8]=C:\Windows\system32\RPCRT4.dll
LoadedModule[9]=C:\Windows\Microsoft.NET\Framework64\v4.0.30319\mscoreei.dll
LoadedModule[10]=C:\Windows\system32\SHLWAPI.dll
LoadedModule[11]=C:\Windows\system32\GDI32.dll
LoadedModule[12]=C:\Windows\system32\USER32.dll
LoadedModule[13]=C:\Windows\system32\LPK.dll
LoadedModule[14]=C:\Windows\system32\USP10.dll
LoadedModule[15]=C:\Windows\system32\IMM32.DLL
LoadedModule[16]=C:\Windows\system32\MSCTF.dll
LoadedModule[17]=C:\PROGRA~2\Sophos\SOPHOS~1\SOPHOS~2.DLL
LoadedModule[18]=C:\Windows\system32\PSAPI.DLL
LoadedModule[19]=C:\Windows\Microsoft.NET\Framework64\v4.0.30319\clr.dll
LoadedModule[20]=C:\Windows\system32\MSVCR110_CLR0400.dll
LoadedModule[21]=C:\Windows\system32\shell32.dll
LoadedModule[22]=C:\Windows\system32\ole32.dll
LoadedModule[23]=C:\Windows\system32\profapi.dll
LoadedModule[24]=C:\Windows\assembly\NativeImages_v4.0.30319_64\mscorlib\54c5d3ee1f311718f3a2feb337c5fa29\mscorlib.ni.dll
LoadedModule[25]=C:\Windows\system32\CRYPTBASE.dll
LoadedModule[26]=C:\Windows\system32\urlmon.dll
LoadedModule[27]=C:\Windows\system32\api-ms-win-downlevel-ole32-l1-1-0.dll
LoadedModule[28]=C:\Windows\system32\api-ms-win-downlevel-shlwapi-l1-1-0.dll
LoadedModule[29]=C:\Windows\system32\api-ms-win-downlevel-advapi32-l1-1-0.dll
LoadedModule[30]=C:\Windows\system32\api-ms-win-downlevel-user32-l1-1-0.dll
LoadedModule[31]=C:\Windows\system32\api-ms-win-downlevel-version-l1-1-0.dll
LoadedModule[32]=C:\Windows\system32\version.DLL
LoadedModule[33]=C:\Windows\system32\api-ms-win-downlevel-normaliz-l1-1-0.dll
LoadedModule[34]=C:\Windows\system32\normaliz.DLL
LoadedModule[35]=C:\Windows\system32\iertutil.dll
LoadedModule[36]=C:\Windows\system32\WININET.dll
LoadedModule[37]=C:\Windows\system32\Secur32.dll
LoadedModule[38]=C:\Windows\system32\SSPICLI.DLL
LoadedModule[39]=C:\Windows\system32\api-ms-win-downlevel-advapi32-l2-1-0.dll
LoadedModule[40]=C:\Windows\system32\OLEAUT32.dll
LoadedModule[41]=C:\Windows\Microsoft.NET\Framework64\v4.0.30319\nlssorting.dll
LoadedModule[42]=C:\Windows\assembly\NativeImages_v4.0.30319_64\System\4598449d72d7ebbd53952399ed5fc710\System.ni.dll
LoadedModule[43]=C:\Windows\assembly\NativeImages_v4.0.30319_64\WindowsBase\a4da99c6b004dccd9d04901b883532b1\WindowsBase.ni.dll
LoadedModule[44]=C:\Windows\system32\CRYPTSP.dll
LoadedModule[45]=C:\Windows\system32\rsaenh.dll
LoadedModule[46]=C:\Windows\system32\WINTRUST.dll
LoadedModule[47]=C:\Windows\system32\CRYPT32.dll
LoadedModule[48]=C:\Windows\system32\MSASN1.dll
LoadedModule[49]=C:\Windows\Microsoft.NET\Framework64\v4.0.30319\mscorsecimpl.dll
LoadedModule[50]=C:\Windows\WinSxS\amd64_microsoft.windows.common-controls_6595b64144ccf1df_5.82.7601.17514_none_a4d6a923711520a9\COMCTL32.dll
LoadedModule[51]=C:\Windows\system32\imagehlp.dll
LoadedModule[52]=C:\Windows\system32\ncrypt.dll
LoadedModule[53]=C:\Windows\system32\bcrypt.dll
LoadedModule[54]=C:\Windows\system32\bcryptprimitives.dll
LoadedModule[55]=C:\Windows\system32\USERENV.dll
LoadedModule[56]=C:\Windows\system32\GPAPI.dll
LoadedModule[57]=C:\Windows\system32\cryptnet.dll
LoadedModule[58]=C:\Windows\system32\WLDAP32.dll
LoadedModule[59]=C:\Windows\system32\SensApi.dll
LoadedModule[60]=C:\Windows\Microsoft.NET\Framework64\v4.0.30319\clrjit.dll
LoadedModule[61]=C:\Windows\assembly\NativeImages_v4.0.30319_64\System.Serv759bfb78#\956cf3bc21854ac41b74d89beee8c75f\System.ServiceProcess.ni.dll
FriendlyEventName=Stopped working
ConsentKey=APPCRASH
AppName=Microsoft Dynamics NAV Server
AppPath=C:\Program Files\Microsoft Dynamics NAV\71\Service\Microsoft.Dynamics.Nav.Server.exe