Admin Console failing with "Unable to launch the application" on Mac

Thanks! It works now but I'm still worried that my Java is out of date, and also that my ISY is out of date, and I'm unable to update either one.

I already did have the "App Store and identified developers" box marked. When I open up the General tab in the Security and Privacy preferences page, that particular section of the page is greyed out, but I can see that the "App store and identified developers" box IS checked. There is no box for "unidentified developers" btw.

But it does seem to make a difference if I click the lock to open the General tab, enter my password, and THEN run Start.jnlp (actually it's Start (2).jnlp because I have two previous versions).

I'm then told that my Java is out of date. The first time I got to this dialog, it said my Java was out of date. So I clicked on Update in this dialog and then it just crashed.

I started over again and this time I did not select the "update" option but instead the "run" option. That brings up the ISY Finder. I click on the first line and a pop up menu appears giving me a choice of running the Administrative Console and something else. I choose the Administrative Console and I'm up and running again.

Now when I go back to Start (2).jlnp and run it again, it no longer complains about my Java being out of date, it skips that part, so I can't try it again. It brings me to the page about trusting this developer and I click Run and it runs. So I'm worried that my Java is still not updated and that could cause problems if I try to upgrade ISY

When I try to "Manually Update" ISY, it asks me to select a file. Where do I get this file and will it be compatible with my "old" Java (Version 8 Update 331) on my Mac or do I need to remove and reinstall Java to get a later Java version on my Mac first and how do I do that? (As I said in original message, If I try to update Java through the Mac's Java Preferences page, the circle just spins forever. Apparently if I need a newer Java I will have to remove the old one and reinstall the new one and I haven't found out how to do that reading the Java website.)