IDE 2016.2.5 won't start on Mac OS 10.12.1

Do you see any errors when trying to start? From where do you start it? Try opening from terminal: `open -a "/Applications/IntelliJ IDEA 2016.2.5.app"`.

I tried starting from spotlight and launchpad.

Now from terminal, this is what I got

"LSOpenURLsWithRole() failed for the application /Applications/IntelliJ IDEA.app with error -10810."

I tried searching for error -10810 but couldn't find what error that is

Please check this thread about similar error. Try this solution or re-download from https://www.jetbrains.com/idea/download/ and re-install.

I've redownloaded and reinstalled but the problem persists.

I tried the SE solution, and managed to open it through terminal, but found this line while starting it

Invalid ReservedCodeCacheSize=2400M. Must be at most 2048M

I remember that I changed the setting, so now how can I change the setting outside IDEA?

Thanks Andrey, so far so good, now I think the last part would solve it.

OK finally solved the problem, I changed the idea.vmoptions file located in ~/Library/Preferences/IntelliJIdea2016.2/idea.vmoptions and changed the ReservedCodeCacheSize to 2048M and now it works.

Thanks Andrey!

Thanks for the information.