Problems with Android Studio and the emulator

Hi everyone,

i'm relative new to Android Studio but until now i had no troubles with running applications with CTRL+F9 and then to run the app i normally hit SHIFT+F10. This worked normaly. When i try to run my app over the console (adb -s emualtorXY install -t myapk.apk) it is working.

My problem is that in the Android Studio when i look at the icons where there is the play button to run the app the name of the emulator is grayed out! When i hover over with the mouse i get a message: "not applicable for the "MyApp::TestApp" configuration (Shift+Alt+F11). But when i hit this combo nothing happens .

I searched the web for a solution but found nothing until now. Maybe someone here does know what to do ??