Debug problem with native VI

Hi

I have problem with native VI used to initialize the instruments: Fgen, Scope, DMM, DCPower sypply with options. 

As it is attached, the program goes into a loop in this functions and I only can abort it resetting LabVIEW.

I am using LabVIEW 2015 and the instruments are included in a PXI chassis. 

How can I debug the error to know where is the problem?

Thanks!