Enabling IWP crashes FileMaker

[labyrinthian]

I'm attempting to enable IWP for a database. When I click on the radio button under Instant Web Publishing from 'Off' to 'On', Filemaker takes a little while to process the click. Then, when I click 'OK' to accept the change, FileMaker crashes immediately. It doesn't even give me the spinning rainbow, it just shuts down instantly.

It will also not accept other ports (default is 80). I do have a firewall (running Lion OSX), but it is enabled to allow FMP sharing. Does anyone know what could be creating this problem, and why it is crashing FMP?

[labyrinthian]

Update: With the help of a tech at FMP, we determined the application file had become corrupted. I trashed the app file and then reinstalled FMP and it is now working fine.