Checkstyle-IDEA plugin, Android SDK settings gone

I upgraded to IDEA 10.5 CE on Mac OS X 10.6.7, and have two issues:

- Checkstyle-IDEA plugin isn't working anymore (any plans for a new compatible version)
- my Android project loose the Android SDK settings; when I try to run them, getting "Error: please select Android SDK". Would be good if those settings would be kept after an upgrade. Actually having a hard time finding where to set the Android SDK again right now. It's not under "Preferences...", is it? Can't find it there when searching for Android via Help.