Srieng,
The datasupp.c failure can be caused by several reasons, we will need a detailed description of the operation you were making before this error happened, what is inside the VI that gave you this error, has this VI worked before, etc. Please contact us with this information, you can find the steps to email us at www.ni.com/ask , please do so and we'll review the details you send to us to determine the causes and probable workaround. Thanks!...
Nestor Sanchez
Applications Engineer
National Instruments
Nestor