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TestStand Exception with Labview .net interop assemblies


Hello everyone,


we are developing a test procedure using .net interop assemblies (as the customer prohibits direct use of LabVIEW VIs in his production area for some reason).


We have different hardware driver libraries based on the common low level drivers (AI/AO/DI - daqmx, PXI power supply - dcPower). All of those libraries are working just fine at the LabVIEW side.

The .net interop assembly creation out of the application builder works fine (but may be done on two different PCs). We have Teststand sandboxes for all of the libraries (separately!), which are working fine.


Now when we put the calls to libraries together, TestStand throws an exception, either at runtime or even when you create a new step (seems to relate to the modules already in memory) 


Environment: LabVIEW 2017.0f2, TestStand 2016 SP1


The Exception is something like that:


An exception occurred inside the call to .NET member 'Autocalibration':
System.TypeInitializationException: The type initializer for 'NI_PXI_4112.LvClient' threw an exception. ---> System.IO.FileNotFoundException: Missing Dependency in: ---> NationalInstruments.LabVIEW.Interop.VIAssemblyException: Missing Dependency in:
   --- End of inner exception stack trace ---
   at NationalInstruments.LabVIEW.Interop.LVRuntime.throwMissingDependencyException()
   at NationalInstruments.LabVIEW.Interop.LVRuntime.LVClientInit(ClientKind clientKind, IntPtr initRec)
   at NationalInstruments.LabVIEW.Interop.LVRuntime..ctor(String[] entryPointNames, String lvClientAssemblyPath, String lvRuntimeVersion)
   at NI_PXI_4112.LvClient..cctor()
   --- End of inner exception stack trace ---
   at NI_PXI_4112.NI_PXI_4112.Autocalibration(String resourceName, String channels, Int32& errCode, String& errSource)




Does anyone have a hint how to debug that exception or what may be the root cause?

(we currenly suspect something like reentrancy?)


Thanks in advance!


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