Exe developed in 32 bit Windows XP not working in 64 bit Windows Vista

Question

Am using LabVIEW 8.6 demo version downloaded from internet and Windows XP 32 bit OS. I developed an application and created an exe which communicates with a USB smart card reader. That exe file works fine with that USB device in Windows XP 32 bit OS.
But, when i used that application exe in Windows XP 64 bit OS, and also in Windows Vista 64 bit OS, the application is not working. The communication with the USB smart card reader is not at all establishing. The USB device will take appropriate 32 bit driver and 64 bit driver automatically when updating on various OSes.
How to resolve this? Shall i have to install any 64 bit drivers for LabVIEW?
Thanks,
Mathan
Solved!
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Answer 1

Dear Amit,
Thanks for the attention. I have tried both the option you told, "Run as administrator" and checked "Services" and smart card services are running. Even i tried restarting the device, but the same result. Maybe as you told, this maybe more of an MSDN issue. I don't know how to proceed.
Thanks,
Mathan
[Edit: From somewhere in MSDN forum or others, i tried the below suggestion too, but in vain. Same scenario. I lost myself in VISTA.]
1. Right-click on the key HKLM\SOFTWARE\Microsoft\Cryptography\Calais and select Permissions...
2. Click Add.
3. Click Advanced.
4. Click Locations.
5. Click on the computername and click OK.
6. In the window 'Select user or groups', click on Find now.
7. Select LOCAL SERVICE.
8. Click OK.
9. In the window 'Select user or groups', click on OK.
10. In the window 'Permissions for Calais', click on LOCAL SERVICE and make sure 'Full control' , 'Read' and 'special permissions' is allowed.
11. In the window 'Advance Security Settings for Calais", deactivate the options 'Inherit from parent the permission entries that apply to child objects...'
12. When the window 'Security' appears, click Copy.
13. In the window 'Advance Security Settings for Calais", activate the option 'Replace permission entries on all child objects with entries shown here that apply to child objects' and click OK.
14. In the window 'Security' click Yes
15. In the window 'Permissions for Calais', click OK.
Message Edited by mathan on 01-28-2009 10:15 PM