OH2: Daikin OH1.x addon not loaded

after an update to the recent snapshot, a 1.x binding stopped working.
It’s placed under /usr/share/openhab2/addons; file rights seem also fine:

[19:41:33] pi@openHABianPi:/usr/share/openhab2/addons$ ls -l
total 40
-rw-r--r-- 1 openhab openhab 32951 Feb  1  2016 org.openhab.binding.daikin-1.9.0.b2.jar

In my addons.cfg, I added “,daikin” - and still in Karaf I can see the following error:

19:41:30.789 [ERROR] [core.karaf.internal.FeatureInstaller] - Failed installing 'openhab-binding-daikin': No matching features for openhab-binding-daikin/0.0.0

I also tried “,daikin-1.9.0.b2” - but the result is the same. Before the update, everything worked fine.
Where’s my mistake?

Thank you,