Ethernet library not available?

I just installed version 1.6.1 and it seems to be missing the Ethernet library.

Anyone else having this problem?

Thanks.

Saw report of Wire library missing yesterday. First I'd heard about Ethernet.

Ethernet is there

What model Arduino do you have selected?

I am using the Mega 2560.

I re-installed the last version and it didn't have a problem.

Thanks.

I thought that the yun was a device. I'm using an Arduino Mega.

Why would I have to update a yun device?

Thanks.

Tony, the yun part of my reply is a signature, sorry for being misleading