X10 EXPRESS v1.5.0 Nightlies - External Multi Module not working

[MRC3742]

I've have updated my X10 EXPRESS with the just released 1.5.0 nightly.
I was hoping DSMX telemetry received by the MultiProtocol Module would now be working.

Unfortunately the MPM has stopped working altogether with this firmware version.
The MPM Green LED is on solid but the Red LED is just flashing (.5s ON and .5s OFF) with no RF output from the Module.

According to the MPM troubleshooting page:
Slow blink(on=0.5s,off=0.5s): serial has been selected but no valid signal is being seen on the RX pin.

The MPM was working without telemetry on this same X10 EXPRESS with ETHOS v1.4.15

[packetpilot]

Both of mine seem to be working -- I'm on an X10S Express, though this is likely inconsequential afaik. [Update: seemed, but do in fact not work.

I wonder whether enough info exists here (and maybe in the "API reference" site) to get it choochin' again, but if I had to bet, it's deeper than that.]

Have you seen this? I had to do this just yesterday to both modules since my X10S Express has been sitting collecting dust for years, and "silly me," I updated the internal module and that required me to mod my JP4in1 SE modules to get them working again.

[bsongis-frsky]

@MRC3742 is right. I have broken something. I haven't found the reason yet. I will continue on Monday

[bsongis-frsky]

I have nailed it.

[MRC3742]

Confirmed! 👍
I just downloaded and upgraded to the newest 1.5.0 nightly (Jan-17-2024)
Multi Module with telemetry is now working on Horus X10 EXPRESS.

Thank You - Rich