ANDROID: ERROR: Error retrieving Media Library list.

You may have successfully downloaded ebooks in the past but are now getting this message:
"OverDrive Media Console
Error retrieving Media Library list.
AdobeEPUB is not a constant in the enum type class com.overdrive.mobile.
android.mediaconsole.framework. ContentFormat (error code 1006)

This may be an Android version compatibility problem. Try reloading the OverDrive Media Console for the Android again.