I did a little test using inlne ‘if’ syntax, and this didn’t give any errors or warnings.
(This is driving the x location of a cube based on the x location of an empty. It will only use values greater than zero)
Here my driver. I have no idea what is happening and possibly I made a mistake even hilighting the cause of the error. In any case, by clearing animation data on the armature I erased 80% of the wall of text spammed by blenedr console.
Here an example of one error. Theres an entire wall of warrnings. When value becomes zero it says “invalid”. For some reason. In any case the rig works no issue, its not fast but works. Zero problems.
If you pick the ! option in the drivers editor top-bar (Only show errors), does it show any drivers in the list?
Turn off the ‘Only Show Selected’ option, so it will be able to display any of the drivers.