I can't get this G-Code generator working at all. I've tried so many times.

Example: 

I want to engrave some text in a CNC-milling machine.

1. I open my dwg file.

2. I open the 2D G-Code Generator.

3. I click the "Generate" - button.

4. Command window: "Select one or more enteties" .

5. I select the text, and right click.

6. Command window: "Selected objects: 1" .

7. Nothing happens.... -Why???

I've also tried to select arcs and lines, but the G-code generator simply doesn't work at all. 

Regards Johan