Apple TV doesn't pick-up itunes libraries

Hi,

I have recently upgraded to OS X El Captain version 10.11.3, with itunes 9.3.1, and photos 1.3

As a result, my Apple TV does pick-up all photos residing on my MAC but not the itunes photo libraries themselves. Many of my photos were loaded straight

into photo so don't appear on my Apply TV.....does anyone have any clue what the issue is ?

Before the upgrade, Apple TV only picked-up the current "active" library only....something has changed...

Thanks TanSrijan