@galileo
Yes clearing shutting down openhab & clearing tmp & cache in the openhab installation would be a good idea and then restarting.
The addresses are of the correct form
//PETER/100/56/4
gives:-
PETER is the project name
00 is the network address of your cbus network
56 is the application which is lighting
4 is the group number
Where possible copy complete sections of log files and complete config files then it is much easier to possibly see something wrong.And where you have log files or content of files pasted in the message use the code fences to separate them, it makes it much easier to read. See How to use code fences
Thanks
John