Snap to tangent point

[KevinM.]

Since switching over to Inventor 2012 I have been having trouble snapping to tangent points on a curve or circle to pull dimensions. I would do it manually but if the dimension is not referencing a specific point in the model it turns pink to identify an error.

Is there a setting that may be not allowing me to snap to tangent points?

Thanks.

[Cadmanto]

Kevin,

Are you not able to select the circle or arc at all?

I ask because I noticed that if you select the arcor circle at the tangent point and select the other or hover over the point it will switch to tangent.

http://forums.autodesk.com/t5/Autodesk-Inventor/Tangent-Dimensioning-of-Arcs/td-p/3317169