I was able to compile the 8bitd. But then nothing works.... how to start the server correctly to sync. I tried to start it without params. Just hanging in the process-list. Tried to generate a wallet-address. Blinking cursor. The tutorial in the thread https://bitcointalk.org/index.php?topic=1028119.msg25225323#msg25225323 helped, but what is the correct order... or just to wait. When i start the server it asks for a masternode key, but the command to generate one shows "error: couldn't connect to server". I really don't know what I'm doing wrong and appreciate any help.

Thanks in advance!

You can try:

cli masternode outputs

It should show not-empty TX outputs

If wallet is not synced, you may need to wait till it fully synced, and the restart the wallet to see proper output from this command.