Where is source folder 'gen' ?

[skavengeer]

Where folder 'gen'?
Project 'com.ezio.multiwii.MainMultiWiiActivity' is missing required source folder: 'gen' com.ezio.multiwii.MainMultiWiiActivity
file .classpath
path="com.android.ide.eclipse.adt.DEPENDENCIES"
<classpathentry kind="src" path="src"
<classpathentry kind="src" path="gen"
<classpathentry kind="output" path="bin/classes"

[LunarWatcher]

Gen is the generated files, like R. This project is very old, the ADT plugin is outdated. If you use Android Studio you can import the project (AS has support for that). Looking aside all the bugs that can be caused by using a project that was last updated 4 years ago, your best bet is still to upgrade to Android Studio so you don't have to deal with the ADT plugin bugs