Android Studio The project is already registered
android, android-studio, compilation
Solution
Look around in your `.idea` directory for mentions of the problematic project. I had the same problem and resolved it by deleting the entry from `.idea/sbt.xml`.
Problem
I've a big problem with Android Studio. I have a project that depends on two other projects (as libs). I followed the guide Problems importing project into Android Studio regarding ActionBarSherlock for import external modules. I opened "Project Structure", imported the module, but after that I can't see it in the Modules area. The Modules area contains only the root module, seems it is not refreshed (this is strange). So if I try to add the module as a Dependency, Android Studio doesn't find any module! Then, if I try to re-import the module, it says that the module/project is already registered!! Maybe I'm missing something, but I don't know what....! I have this problem both on Windows and MacOSX. Thanks in advance, Federico