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I am working in a 64-bit Windows 7 environment and running a 32-bit version of LabVIEW. I need to link up a specific instrument to LabVIEW, using a LabVIEW library which was given to me by the company that made the instrument. The library includes calls to a couple 32-bit DLL files which were also given to me by the company. LabVIEW is having trouble reading those DLL files, and whenever I try to open a file I get a popup message that says "Error loading DLL". Is this because of a 32-bit/64-bit incompatibility, or is it due to something else altogether ?

Thanks,

Art
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    You must check the DLL in the [dependency walker](http://www.dependencywalker.com) – CharlesB Jun 14 '13 at 16:00
  • Thanks, Charles, I did exactly that and it found the error... There was an erroneous path buried somewhere which led to the error in the dll initialization. – Art Jul 08 '13 at 13:37

2 Answers2

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You should be able to call at 32 bit DLL from 32 bit LabVIEW in a 64 bit OS. I believe the issue is something else.

Adnan Z
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Check the DLL in the dependency walker, there must be a DLL dependency problem.

CharlesB
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