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.NET DLL missinng error

I have a vi that calls a .NET DLL.  The VI can't find the DLL, so I found the DLL through browsing.  What I did that, I got the attached error message.  Do you know what would cause the problem?  Thanks!

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We have a ton of problems with DLL performance here.  Most of what we run is distributed EXEs, so your performance may differ some in the development environment (though we have problems with the DLL not loading in LV too).

 

Make sure there's only one instance of the DLL running... use Process Explorer to see where it's picking the DLL up from.  If you've got more than one version in the project or folder, trim that down to one.  Some distros like it in the "data" folder, others work better with it in the same directory as the exe. 

 

LabVIEW doesn't support .net-4.0 real well yet.  Check that the DLL is built with .net-2.0. 

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