Only one black jag working in system. HELP

[jason701802]

Both of our KOP Black Jags recently died from "gate faults". When we had them installed, our system was working fine. Now we have replaced both black jags with new ones that we ordered from DigiKey. Now when they are hooked up, we can only have one black jag in our system.
When we have one black jag running as our serial-to-CAN bridge, all the gray jags below it work fine, but if we out an additional black jag, we are unable to get communications with it or any jags connected after it. One of our KOP black jags still works as a serial-to-CAN bridge, but is also having this problem now. This problem presents when connected to the computer with BDC-COMM or when connected to the cRio using C++.
Is there sone setting that we have to change to make the black jags work in CAN only mode? Any help is greatly appreciated.