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Why Does the NationalInstruments.Common.dll Have an Exclamation Point Next to it?

Primary Software: Measurement Studio>>.NET Support
Primary Software Version: 7.1
Primary Software Fixed Version: N/A
Secondary Software: Driver Software>>NI-488.2, Driver Software>>NI-DAQmx, Driver Software>>NI-VISA

Problem:
I am using Microsoft Visual Studio and Measurement Studio or one of National Instrument's drivers. I am trying to open an example .NET project, but I am unable to run the project because I am missing a reference to NationalInstruments.Common.dll. 

There is also an exclamation point next to the NationalInstruments.Common.dll under the references section in the Solution Explorer. How can I get NationalInstruments.Common.dll?

Solution:
NationalInstruments.Common.dll should be located in the following directory:
<MeasurementStudioVS200X>\DotNET\Assemblies\Current
Where <MeasurementStudioVS200X> corresponds to your version of Visual Studio.
It should also be installed to the Global Assembly Cache (GAC) located in:
C:\WINDOWS\assembly

You should also find the other NationalInstruments.xxxxx.dlls of other drivers that you may have installed on your computer located in these folders (for example - NationalInstruments.NI4882.dll, NationalInstruments.DAQmx.dll, or NationalInstruments.VisaNS.dll).

If you do not see the NationalInstruments.Common.dll in these locations you will simply need to repair the NI Measurement Studio Common .NET Language Assemblies for the .NET Framework. To repair this software, follow these steps:

1) Open the Control Panel.
2) Open Add or Remove Programs.
3) Find National Instruments Software and click Change.
4) Find and highlight the NI Measurement Studio Common .NET Language Assemblies for the .NET Framework X.X under the NI Products section.
5) Select the Repair button in order to reinstall any missing files.

Related Links:
KnowledgeBase 3UQHBA00: Building a Measurement Studio Project in Visual Studio 2005 Results in Warning MSB3247: Found Conflicts Between Different Versions of the Same Dependent Assembly

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Report Date: 03/10/2005
Last Updated: 01/22/2009
Document ID: 3J9F3AHB

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