Home sharing works for my iPhone 4 but not iPad 3, it hangs on connecting

Sorry, and yes, I have read the Troubleshooting Home Sharing, but I cannot understand why my iPad 3 will not connect to our macbook air. iPhone 4 on iOS7 does fine, whereas iPad 3 on iOS 8 doesn't. I go into Music on the iPad, select More option, select Shared. I then get the circle for the connection which completes and instead of being able to access all the music on the macbook, it hangs on Music, with nothing on the screen being selectable. It has just hung.

I can come out of the app with the usual gesture or Home button and on returning to Music, I can select the music on the iPad. But if I go back into More, select Shared, select the macbook library, the same thing happens or the app drops out back to the home screen.

I have the latest version of iTunes on the macbook and it works with the iPhone anyway. Neither of the idevices need a Music app update. I have 6 GB left of 56GB on the iPad, so don't think it would be the capacity of the iPad.

Anyone got any ideas? There are so many posts on this, but doesn't seem to be one like this and this sounds like a glitch and not some network share issue or port issue.

Ta