Build error after migrating from Crashlytics SDK to Fabric

Question

Recently, we\'ve upgraded our organization\'s Crashlytics account to Fabric, and I\'m trying to replace the old Crashlytics SDK with the new Fabric SDK in our existing apps.

Answer 1

It turns out that the old Crashlytics JAR was still hiding in my libs folder somehow, and after removing it, this error no longer persists.

I feel a little boneheaded, but I'll leave this up to help any future Googlers who run into the same issue. :)

Answer 2

I found exactly what @TreKing mentioned in his comment. The upgrade/migration failed to remove the previous dependency from my app/build.gradle file. Look for an old entry like compile 'com.crashlytics.android:crashlytics:1.1.13' and remove it.