Problems with outgoing NMEA2000 after SK2 upgrade

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I posted this on the SignalK group but got no response. Does anyone have NMEA2000 outgoing working from SignalK V2?

I just upgraded to SignalK 2 on Raspberry Pi, via OpenPlotter. N2K connection via a Innomaker RS485/CAN hat. System was working perfectly before upgrade of SignalK to V2. I'm using canbus. I tried canbusjs, but the system stopped receiving data.
Now, it appears that there is no outbound N2K on the CAN bus. The connection is good on the RPI, I can see it via ifconfig command . But, ifconfig reports RX data but no TX data. Also, when I look at OpenCPN, the data that is being generated by N2K devices is being shown on screen (GPS, Depth, etc.). Also NMEA0183 wind and derived data True Wind is coming in to OpenCPN via SignalK. It's just not going out as NMEA2000.

Checked log on signalk-to-nmea2000 and I can definitely see the server is generating PGNs. They just don't appear to be going out the CAN port. When I tell my B&G Triton2 display to search for sources, it doesn't find the RPI at all.
Any thoughts on what I might do to troubleshoot this?

Andy