I apologize - I figured out what my issue was. Basically, I've been using a test .dbf file and the script is setup to handle an "ok to overwrite" dialog, but after I say "ok to overwrite" if I cancel a few screens later I lose the original .dbf I was working off of...
Subsequent script runs were hanging because the "ok to overwrite" dialog is no longer displayed and the script was waiting for it...
Edit:
If anyone else comes across this, I added a MsgBox between each statement in the area that seemed to hang up the script. This helped me isolate exactly which statement was giving me problems.
MaxG's post in Program Unresponsive, Script Hangs was marked as the answer