After a lot of retrys i found following solution:
I installed ERPNext like my step by step guide Fool proof install - step by step - #50 by Curt.Beck.
After setting up the company I tried and retried 10 times with my german data inputs, also for chart of accounts. I used SK04 first. After no happy ending and 10 times no succes I changed the data. The result is: I was able to succes the setting up process, but only with “Standard with Numbers” for chart of accounts. With our german SK04 i was not possible.
So, for a full ERP use not really a solution, but I don’t use accounting in ERP. So for me it’s working, but maybe not for other german users.
So after a long journey I completed the installation!!!
No I have the next problem. I can’t use more then one email outgoing account in MS Office 365. The next WTF. So i go on to the next topic. Login with Office 365: Email not verified
ERPNext has some good parts, but just to setting it up it’s a mess and really frustrating! (for a normal user and no professional Linux and Python god).
So for all othe installers, use my guide for a manual installation. It woked for me. I don’t know how long it works, maybe until the next update 
Thanks to all.