Did you read the post from the cumulus web site? Steve the guy who wrote cumulus says it won't work. I can't make it work.
I do not find anything on the ambient site that says you can run the bridge and cumulus at the same time.
It does say this which implies to me that the bridge will not work with other software.
Notes and Caveats:
•Attention Virtual Weather Station and WeatherLink software users: Please note that the WeatherBridge does not communicate directly to WeatherLink or Virtual Weather Station software, and is designed as a standalone, internet appliance only.
You can run one or the other but not both at the same time.
Just for info I can run the bridge and cumulus at the same time by using a Davis station reporting thru Virtual VP.
I just had cumulus, wuhu, vplive and the bridge all running at the same time using VVP.