labview 2012 32bit running in 64 bit windows

Hello Sir/MAdam,

I have recently installed LabView 2012 on 64-bit windows 7. It seems LabView is 32-bit. When I run a simple code for reading digital inputs, it does not response while when I run this code on LabView 2010 running on a 32-bit PC it works!

 Could this problem be because of 32-bit LabView 2012 running on my 64-bit windows. I also installed drivers which support 64-bit. 

I attached the simple code I am using for reading digital inputs.

I appreciate in advance your kind help.

Thanks,

soroush.