Android Failed to find this app in the PackageManager io.crash.air
This issue solved in 2.6.1 version. Upgrade your crashlytics version from 2.6.0 to 2.6.1
compile('com.crashlytics.sdk.android:crashlytics:2.6.1@aar') { transitive = true;}
Mike from Fabric here.
Sorry for this error! Version 2.6.1 of Crashlytics corrects this. Release notes here: https://docs.fabric.io/android/changelog.html#id6
Clean, rebuild did not work for me, I went back to 2.5.7, so for the time being my app build.gradle now is back to (and no more exception) :
compile('com.crashlytics.sdk.android:crashlytics:2.5.7@aar') { transitive = true;}