I have designed a good number of Arduino-based projects. Not so long ago, I updated the IDE to the 1.6.x version with no problem. In my latest project I'm using an ATMEGA328 with no crystal. When I went back to the IDE and try to program the actual chip I couldn't find the correct board ('Atmega328 on a breadboard' option).
I downloaded the 1.5.8 version as I remembered that worked following the instrucitons on:
I tried again with no success. I went down to most of the working versions on 1.5.x with no success. I couldn't make the 'Atmega328 on a breadboard' option to appear again.
Any idea? Do I need to delete the 1.6.x versions and just leave the 1.5.x version? I followed the instructions to the letter and my folders in 'Preferences' are correct.