Nikki's ruler ppm is on layer 0, can it be that you have that layer tuned OFF, in most of the cases, never do that if you dont know what you do, or have a very spesific reason for it, TC use layer 0 alot so it's needed for many task TC should do for you.
Else, check out TurboCAD ppm, not this pixelthing and see the difference
Take a look in the PPM section here at the forum aswell
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