As an active participant of the CAM forum, I would say that hand's down, the most common problem we see is that of "My post failed, it said something about tool orientation"
This always comes down to one thing: People dive right into programming their part, but they never bothered to do a Setup. So when their tool is trying to mill along the Z axis, they think the solution is to turn on Tool Orientation. This is clearly wrong and the tooltip tells you what it's for, but apparently that is ignored or misunderstood.
I propose something along the lines of these options:
1) Grey out all the toolpath icons until a Setup is performed.
2) If that's not desired by the community, perhaps clicking an operation could prompt a pop-up window informing you that you haven't established your WCS yet and would you like to? This box MUST have a button to click for more information, perhaps linking to a very short video or text explaining what the WCS is for and why you need to set it up before programming
I mean, we all love the easy padding of kudos and "Your answer was accepted as solution" but I'd rather just see the community not even hit that problem in the first place
What are your thoughts @Steinwerks @HughesTooling @al.whatmough ?