Commented Issue: Nuget.exe 2.2 crashes [2940]

Currently using V2.0 of nuget.exe and it runs fine.

Once I update to 2.2 using nuget

D:\Development\GlobalDependencies\NuGet>nuget update -self
Checking for updates from https://nuget.org/api/v2/.
Currently running NuGet.exe 2.0.0.0.
Updating NuGet.exe to 2.2.0.
Update successful.

that works fine, only now whenever I call nuget.exe (with or without arguments) it simply won't run and immediately crashes rendering it useless. I suspect it has something to do with our corporate firewall as I never have this problem elsewhere. But v2 did work, v2.2 just doesn't.

Error report shows the following:

Version=1
EventType=BEX
EventTime=130019904694507372
ReportType=2
Consent=1
UploadTime=130019904695137435
ReportIdentifier=56ac63be-585d-11e2-a06b-0022190ad73b
IntegratorReportIdentifier=56ac63bd-585d-11e2-a06b-0022190ad73b
WOW64=1
Response.BucketId=3431065750
Response.BucketTable=5
Response.type=4
Sig[0].Name=Application Name
Sig[0].Value=NuGet.exe
Sig[1].Name=Application Version
Sig[1].Value=2.2.31210.9045
Sig[2].Name=Application Timestamp
Sig[2].Value=50c5eb04
Sig[3].Name=Fault Module Name
Sig[3].Value=StackHash_0a9e
Sig[4].Name=Fault Module Version
Sig[4].Value=0.0.0.0
Sig[5].Name=Fault Module Timestamp
Sig[5].Value=00000000
Sig[6].Name=Exception Offset
Sig[6].Value=000a004c
Sig[7].Name=Exception Code
Sig[7].Value=c0000005
Sig[8].Name=Exception Data
Sig[8].Value=00000008
DynamicSig[1].Name=OS Version
DynamicSig[1].Value=6.1.7601.2.1.0.256.4
DynamicSig[2].Name=Locale ID
DynamicSig[2].Value=2057
DynamicSig[22].Name=Additional Information 1
DynamicSig[22].Value=0a9e
DynamicSig[23].Name=Additional Information 2
DynamicSig[23].Value=0a9e372d3b4ad19135b953a78882e789
DynamicSig[24].Name=Additional Information 3
DynamicSig[24].Value=0a9e
DynamicSig[25].Name=Additional Information 4
DynamicSig[25].Value=0a9e372d3b4ad19135b953a78882e789
UI[2]=D:\Development\GlobalDependencies\NuGet\NuGet.exe
UI[3]=NuGet has stopped working
UI[4]=Windows can check online for a solution to the problem.
UI[5]=Check online for a solution and close the program
UI[6]=Check online for a solution later and close the program
UI[7]=Close the program
LoadedModule[0]=D:\Development\GlobalDependencies\NuGet\NuGet.exe
LoadedModule[1]=C:\Windows\SysWOW64\ntdll.dll
LoadedModule[2]=C:\Windows\syswow64\kernel32.dll
LoadedModule[3]=C:\Windows\syswow64\KERNELBASE.dll
LoadedModule[4]=C:\Windows\System32\SYSFER.DLL
LoadedModule[5]=C:\Windows\system32\mscoree.dll
State[0].Key=Transport.DoneStage1
State[0].Value=1
FriendlyEventName=Stopped working
ConsentKey=BEX
AppName=NuGet
AppPath=D:\Development\GlobalDependencies\NuGet\NuGet.exe


Any help/ideas much appreciated.

Thanks
Scott.
Comments: ok tried download copies from codeplex, nuget.org and via vs package manager nuget.commandline. Same result everytime. Crashes immediately every single time. In an effort to find more detailed error, I downloaded the source and build the exe and the odd thing is that this does run without error so I can't even find out where the error is occurring. This error affects every machine in our network (including a completely fresh install) that I've tried which has .Net 4.0 installed so does not appear to be a bad install