Why do I get "Failed to load shared library." error when using NI-DCPower support package (or IVI-C driver) with ICDEVICE in Instrument Control Toolbox (64-bit MATLAB)?

Question

MathWorks Support Team am 21 Mär. 2014

Bearbeitet: MathWorks Support Team am 7 Feb. 2017

I am trying to use the NI-DC Power support package with Instrument Control Toolbox MATLAB 2014a (64 bit), and when running the following command:

I am getting the following error

>> ictObj = icdevice('nidcpower.mdd', 'DAQ::PXI1Slot1', 'optionstring','simulate=true');

Error using icdevice (line 233)

Failed to load shared library.

Answer 1

MathWorks Support Team am 7 Feb. 2017

There might be multiple causes that can cause this since the error is very generic.

Make sure that the latest version of NI-VISA (5.1 or later) is installed. Older versions of NI-VISA (5.0) are missing some required header files.
Using IVI-C drivers (such as NI-DCPower) with 64-bit MATLAB (R2014a and earlier) installations require a properly installed and configured C++ compiler (as opposed to 32-bit MATLAB installations, which include a compiler)

Run mex -setup to check whether a valid compiler has been configured.

>> mex -setup

If there is no compiler configured, then the expected error would be:

>> ictObj = icdevice('nidcpower.mdd', 'DAQ::PXI1Slot1', 'optionstring','simulate=true');

Error using icdevice (line 233)

A 'Selected' compiler was not found.

You may need to run mex -setup.

However, in case of a failed Windows SDK 7.1 installation, the error might be:

>> ictObj = icdevice('nidcpower.mdd', 'DAQ::PXI1Slot1', 'optionstring','simulate=true');

Error using icdevice (line 233)

Failed to load shared library.