AndroidStudio 0.8.2 Run App or Debug App fails

I have generated an app with navigation drawer using the wizard. When I choose Run 'App' or Debug 'App' I get this error: The Generate Signed APK... option works and it creates the signed app which can be installed on the phone and works. Also make or rebuild project works in debug or release without errors. I have configured the signing information in project structure, but I get the same error. Also I have another older app which runs or debugs without this error and have the same gradle.build, except that the last one is targeted to sdk 20 This is my build.gradle file ``` apply plugin: 'com.android.application' android { compileSdkVersion 20 buildToolsVersion '20.0.0' defaultConfig { applicationId "com.mydomain.myapp" minSdkVersion 15 targetSdkVersion 20 versionCode 7 versionName "1.06" } buildTypes { release { runProguard false proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' } } } dependencies { compile fileTree(dir: 'libs', include: ['*.jar']) // You must install or update the Support Repository through the SDK manager to use this dependency. compile 'com.android.support:support-v4:20.+' compile files('libs/android-query-full.0.26.8.jar') compile files('libs/AppRate_1.1.jar') compile files('libs/gallery-lib.jar') compile files('libs/GoogleAdMobAdsSdk-6.4.1.jar') compile files('libs/libGoogleAnalyticsServices.jar') compile files('libs/sqliteassethelper-2.0.1.jar') compile files('libs/universal-image-loader.jar') } ``` - Make project works. - Rebuild project works. - Generate Signed APK works. - Run 'App' fails - Debug 'App' fails