At time, I view X lib error on the terminal from where I run iFolder. What is this?

Explanation: This is an issue with the synchronization of messages displayed in the View Activity tab. This does not affect synchronization, however, you will not be able to view the GUI because it is freezed.
Possible Cause: There might be either several operations being performed on the data or the data volume to synchronize might be large.
Action: Terminate the application and restart it.