Arduino Uno and Arduino Yun software. Which version of the IDE works with both best? I have been working with Unos and just started working with Yun. I have 1.86 currently installed but the Yun starts up saying to use 1.5.6-r2 Beta IDE. Should I uninstall 1.8.6 and install 1.5.6-r2?

Thanks for your help.

Lisa
The Yun startup was written when the normal IDE didn't support the yun, so you had to use a release candidate of a future version.

Those days are long gone.

Always use the latest version of the IDE.