I thought I would finally make the jump to Radian. (Or is it called M9 in this forum?)
Radian Studio and Release 9 are two different products. See the 9 FAQ.
In this forum, people normally call Release 9 either "9" or "M9" or whatever. They refer to Radian Studio as "Radian Studio." "Radian" these days is mainly used to refer to the internal parallel database technology on which Radian Studio, Release 9, and all other modern Manifold products are based.
Any idea what I am doing wrong?
Assuming you are using the latest build of Release 9 and not Radian, (always say what you are using to avoid making everybody else guess...), you've probably missed some simple detail, like not right-clicking on the table but instead just right-clicking on a blank portion of the project. Or, you missed some simple detail when you created geometry.
However the New Drawing dialog opens up, you can always choose an existing table on which the drawing will be based by choosing the desired table in the Based on box. If you don't see in the list offered the table you believe you populated with geometry, that means there was a mistake made further back.
You can give yourself the confidence that creating a new drawing from an existing table works perfectly every time by opening one of the example projects that can be downloaded, right clicking on a table for a drawing and creating a new drawing using that table.
See also the New Drawing help topic.