Android Google Account Manager 601 Link
Even though you are already signed in, the Play Store demands you login again. Attempting to do so loops back to the error.
If you have tried all the methods above and still cannot sign in, remember: sometimes the best fix is to let go of the past. Consider upgrading your device or moving to a newer ROM. Your sanity—and your Google account’s security—will thank you. android google account manager 601 link
Here is a write-up regarding the functionality, risks, and context of Google Account Manager 6.0.1. Even though you are already signed in, the