why "Arduino" Library missing author

Development Tools IDE 1.x
1

I installed "Arduino" library to IDE 1.6.5 which appeared in the libraries

when startup sketch (always used first to compile download to test connection)

IDE gives an error "Author missing for Arduino"

2

addendum: press tab make the message get posted!!

1- why the lib Arduino takes over the IDE built in system?
2- what that library has that make take over and then why so special about?
3- I did not ask for any thing , my test to compile/download the sketch start up empty frame !!

3

Where did you get this "Arduino" library?

I suspect there is something wrong in the "library.json" file that came with the library.