Fill shape drawn with pen tool

There are three posts dealing with this issue and each time the person who posted the problem said they figured it out but did not say what they did.  Here is the problem:

I draw a shape with the pen tool in Flash CS4.  I made sure the shape was closed.  But, I cannot fill the shape no matter what.  Paint bucket tool does not work.  Whatever I do, I get the red diagonal line on the fill color.  I can fill a shape with the rectangle or oval tools but not the pen tool.

Please help.  Thanks.