Libraries do not get added to APK anymore after upgrade to ADT 22

Question

I have a rather big Android App project that is referencing several library projects. Everything was fine until i upgraded the eclipse ADT plugin to the newest version (v22)

Answer 1

I have encountered a similar problem, spent about 3 hours, but none of the proposed here decisions did not help... Finally I found a source of the problem: my project files & project.properties were read-only. Eclipse is simply silently ignoring any changes in library dependencies when I doing it in the GUI!