Have you tried pressing ESC and exiting the debugger? I know when I use it, it always stops at the end of the program, and you have to press ESC first, then say Yes to stop or Detatch.
I found this on the microfocus site. Check your settings and variables to see if they match what it says. Animator and Putty
Update - It looks like the link no longer works. I wonder if kb.microfocus.com changed their address for the url. The link was just to the KB of microfous.com.