For the Westfall (13-15) by Maw guide there are the Follow the Arrows 4, 5 and 6 note steps that will not allow you to check them as completed. Thus having to make them sticky in order to get to the next step of the guide. I use bugsack and there are no errors generated at load time. And there are no errors generated when attempting to check the box to mark each of these steps as complete. I am using version 1.7.0 of the guide addon. I even tried disabling all addons except WoW-Pro, WoW-Pro Guides and Tom-Tom. And still those steps cannot be checked off as completed.

It's probably because those errors were incorrectly coded by the guide author. All the steps need to have a QID, and those ones don't. Try right-clicking them instead, that will probably work.

Sorry for the trouble, but we haven't been concentrating on improving the older guides since they will be useless in a few weeks!