Moment of Frustration

 From:  ycarry
3324.2 In reply to 3324.1 
Select the first shape, ask Boolean/Diff and
when MoI ask you the other shape to diff, Edit/Hide the first shape then choose
the second shape and Done. Thats all. First shape appear with the diff.
But as now the diff shape (hole) is in the first shape
you need to trust me (or cut the first shape to see the diff). :^p