CloudPull 2.1.4 is now available through this web site and through the in-app software update mechanism. This update will also be available through the Mac App Store as soon as possible.
When editing account settings in the Google Accounts preferences area, the “Select labels…” button becomes disabled when you uncheck the Mail checkbox. This update addresses a bug in which that button would also become disabled if you unchecked one of the other four checkboxes on that sheet.