Unable to load DLL niModInst.dll

Hi Mr/Mrs

I encounter this error. What do I need to install?

Unable to load DLL 'niModInst.dll': The specified module could not be found. (Exception from HRESULT: 0x8007007E)

I do know the dll supposed to exist in C:\Program Files (x86)\IVI Foundation\IVI\Bin which isn't right now.   

Thanks in advance.

Cheers!