Matlab error loading library nicaiu.dll

[guadalupe777]

Hi, 

I am using a DAC PCI 6221, in the past days NIDAQ mx was upgraded and the matlab program I use stop working

I uninstalled all the new drivers and I installed an older version NIDAQ 17.1 (matlab runs perfectly with this version in other computers of my lab) but when I try to run it I got the next error message in Matlab;

There was an error loading the library "c:\windows\system32\nicaiu.dll"

I have checked and the file is in the right path. I have tried to uninstall and install older versions (9.5.5 for example, also used in my lab) and there is always a missing file either nicaiu.dll or sometimes mscvp90.dll

Do you have any clue about what is happening?

Thanks for the help

Thank you

[ZYOng]

What is your OS version? Is it compatible with the NI-DAQmx version? See NI Hardware and Software Operating System Compatibility

Have you tried Using Test Panels in Measurement & Automation Explorer for Devices Supported by NI-DAQmx?