I just updated my Mac to the new op system and when I tried to open my Ai it gave me this message, "To open "Adove Illustrator CS5.1 you need to install the legacy java SE 6 runtime."

I just updated my Mac to the new op system and when I tried to open my Ai it gave me this message, "To open "Adove Illustrator CS5.1 you need to install the legacy java SE 6 runtime." I updated my Java to 8 and it still won't open. I tried to update my Ai to 11...it won't update.

Steven,
The right way/order is to update the OP, then reinstall the applications.
For the Java SE,
http://support.apple.com/kb/DL1572
Some have found that the page may turn up blank to start with, so it may be necessary to reload the page.
Others have found that it may depend on browser. Specifically, a switch from Safari has solved it in one case.

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