[otrs] OTRS 3.3

I am running OTRS 3.3 and everything has been running well for over 2 years now. Today, I had to update my POSTMASTER email password. After that change, every time I reply to a ticket and click submit, I am prompted by Firefox browser to download index.pl. In chrome, the reply to window goes to an all white screen and hangs instead of closing and going the underlying ticket details browser screen. The data is getting posted to the system. What could be causing this issue? Thank you! "Good judgment comes from experience. Experience comes from bad judgment." - Will Rogers Scott R. Morgan Director of Information Systems Mama Fu's Franchise Group