If the after the latest update, the Backup Button under Utilities is no longer working, it probably means you are missing a needed jar. To fix this, simply download the jar from the link below by right-clicking on it, click "Save-as" and save the jar in the following folder. Do not change the name of the jar.


Download: https://storage.googleapis.com/rclibs/dropbox-core-sdk-3.0.3.jar

Express install.

Download and Open this file to automatically copy the file to the correct location. Select KEEP when prompted.