Could not download and install OS X 10.11 Documentation. Failed with HTTP status 404: not found

I'm trying for days now to download the documentation for OS X, iOS etc. on a new Mac. All I get is:


Could not download and install xxx Documentation. Failed with HTTP status 404: not found.


So I tried to copy those 8 GBs from another Mac and it alwaus failed because some content could not be read.


Does anyohe have a suggestion what I can do now? Thanks in advance.


Xcode Version 7.1.1 (7B1005), OS 10.11.1

Could not download and install OS X 10.11 Documentation. Failed with HTTP status 404: not found
 
 
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