World cannot create a player profile

I would recommend using the clean up tools in the game launcher to remove any player profiles that may be corrupted.
You can start the 7dLauncher.exe from the game folder:
Program Files (x86)\Steam\steamapps\common\7 Days To Die
or by right clicking on the game in the Steam Library>Properties>General and select "Show game launcher" from the drop down within the launch options section.

Let us know if this helps!

Thanks so much

My mistake was fixed by your tip!
Finally I can play 7 day's again 

Thank you very much,
LG Lord Yodi Wan