Thanks! That was the problem. Now that you mention it the problem started after a MB reboot.
Hopefully Boris can update the Meteobridge firmware to correct this.
Current Firmware Information:
Platform: TL-MR3020 (plus USB hub)
RAM: 29364 kB total, 3840 kB free (86% used)
SW Version: Meteobridge 3.8 (Dec 24 2018, build 12603), FW 1.4