Hi @aiedb ,
Forgot to mention that Quartus Standard v17.0 https://www.intel.com/content/www/us/en/software-kit/669514/intel-quartus-prime-standard-edition-design-software-version-17-0-for-windows.html use eclipse KEPLER as well. May be you can use 17.0std Eclipse to build the 15.0std Nios II example design.
**Note: Tested and worked
The link provided above is for Quartus Standard v17.0 download. Have to download and install the Quartus first in order to use the eclipse KEPLER built inside.
Best regards,
Sheng
p/s: If any answer from the community or Intel Support are helpful, please feel free to give best answer or rate 4/5 survey.