This is the wrong place for this question. What does the Digi One SP have to do with Programmable ZigBee wireless radio module?
If you mean you are installing Realport driver, one possibility is a bad Ethernet driver under Windows. For example I have one PC with an older, less common Asus Q6600 motherboard and had all kinds of blue-screen issues anytime I did ‘complex’ things with Ethernet. I finally bought a $15 Intel PCI Ethernet card, disabled the Asus Ethernet port and those all vanished. Somehow the Asus driver for the motherboard’s Ethernet port was bad & crashed.