It's hard to know where to start because you've given so little information. What machine's it running in? What OS are you running? What's connected to the Jackhammer board? What driver versions are you using? What version of FWB Toolkit are you using? What other extensions are loading? What sequence are they loading in?

You've said it could be a hardware or extension conflict, then said it isn't. How do you know it isn't? What have you done to convince yourself of this?