# Signing problem on Vista 64 **URL:** \ **Category:** IronRuby\ **Created:** [June 16, 2008, 9:21pm UTC](https://www.ruby-forum.com/t/signing-problem-on-vista-64/140620 "2008-06-16T21:21:13Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![stimpy](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/779978/32.png) [@stimpy](https://www.ruby-forum.com/u/stimpy)\ **Post date:** [June 16, 2008, 9:21pm UTC](https://www.ruby-forum.com/t/signing-problem-on-vista-64/140620/1 "2008-06-16T21:21:13Z")
I’m having a problem running r114 on Vista 64. I did run the runfirst.cmd This is the exception I get: Unhandled Exception: System.IO.FileLoadException: Could not load file or assembly ‘ir, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35’ or one of its dependencies. Strong name validation failed. (Exception from HRESULT: 0x8013141A) File name: ‘ir, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35’ —\> System.Security.SecurityException: Strong name validation failed. (Exception from HRESULT: 0x8013141A) The Zone of the assembly that failed was: MyComputer Any ideas? ---
**Author:** ![stimpy](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/779978/32.png) [@stimpy](https://www.ruby-forum.com/u/stimpy)\ **Post date:** [June 16, 2008, 10:00pm UTC](https://www.ruby-forum.com/t/signing-problem-on-vista-64/140620/2 "2008-06-16T22:00:20Z")
Have you run it in 64bit cmd.exe? Tomas ---
**Author:** ![stimpy](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/779978/32.png) [@stimpy](https://www.ruby-forum.com/u/stimpy)\ **Post date:** [June 16, 2008, 10:08pm UTC](https://www.ruby-forum.com/t/signing-problem-on-vista-64/140620/3 "2008-06-16T22:08:01Z")
To elaborate on this a little, the 64-bit versions of Windows basically have two copies of the registry – one for 32-bit programs and one for 64-bit programs. If you’ve run “sn.exe -Vr” from the “Visual Studio 2008 Command Prompt”, you will end up running the 32-bit version of the program which will update the 32-bit key that controls strong name verification – but will not update the 64-bit key. If you run sn.exe from the x64 version of Visual Studio Command Prompt, you will get the 64-bit executable which will therefore update the 64-bit version of the registry. ---
**Author:** ![stimpy](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/779978/32.png) [@stimpy](https://www.ruby-forum.com/u/stimpy)\ **Post date:** [June 16, 2008, 10:08pm UTC](https://www.ruby-forum.com/t/signing-problem-on-vista-64/140620/4 "2008-06-16T22:08:29Z")
Tomas M. wrote: > Have you run it in 64bit cmd.exe? > > Tomas I tried it just now and got the same result. ---
**Author:** ![stimpy](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/779978/32.png) [@stimpy](https://www.ruby-forum.com/u/stimpy)\ **Post date:** [June 16, 2008, 11:04pm UTC](https://www.ruby-forum.com/t/signing-problem-on-vista-64/140620/5 "2008-06-16T23:04:30Z")
Tomas M. wrote: > What do you get if you run “sn -Vl” on 32bit and 64bit command lines? The problem was I was not running the 64 bit sn, as Curt described. It’s working now. Thanks for the help. ---
**Author:** ![stimpy](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/779978/32.png) [@stimpy](https://www.ruby-forum.com/u/stimpy)\ **Post date:** [June 16, 2008, 10:39pm UTC](https://www.ruby-forum.com/t/signing-problem-on-vista-64/140620/6 "2008-06-16T22:39:59Z")
What do you get if you run “sn -Vl” on 32bit and 64bit command lines?