that was java but i don't think that will help you with sierra and software that old. if you get far enough into the installation to see a java error, then you'll know you're ready to install java support.
but try this first even though your error message may not seem related to the issue discussed.
I've been successfully helping out CS5 users with reinstalls on their Sierra Macs.
CS5 extended and this will answer questions. https://blog.conradchavez.com/2016/06/16/macos-10-12-sierra-will-adobe-software-work/
If you have problems and need to reinstall, have a look at this thread.
Again, use the 2nd link