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I used my Raspberry+Razberry installation for a few month. After a power outage yesterday there is no way to get it back work again.
Opening the exert UI gives a reddish box saying "Error handling data from server". I checked the forum for similar issues and updated all the components and re-installed z-way. There are no hints in the /var/log/z-way-server.log.
Finally it says "ZWay Automation started".
The Razberry boards LED's flashing at power on as expected.
When stopping and starting the server manually it says "Error: 'debug-port' number is out of range. Skipping it.".
ps tells me that the z-way server is running.

But any URL targeting the JSON interface like "..ZWaveAPI/Run/devices[2].instances[0].commandClasses[135].data.stat.value" gives me a "404 Not Found".

Does anybody has an idea where I should look at ?

Try to restore your backup

I copied a new Raspian image to my pi's SD-card. Afterwards I installed the z-wave.me firmware.
Most of my Z-Wave devices were already there (same device ID) but all of them supported the Basic profile only. I had to re-include them and choose the appropriated configuration files. Now it works again.

My application:
- Raspberry + Razberry
- AeonLabs HEMG2
- Some Fibaro actors
- a Popp switch
- Homepage running on Raspberry using the JavaScript JSON interface to log values and control switches