Replay Converter 2.80 - error "FFMPEG.exe has stopped working"

[nbrenner]

I have been using Replay Converter, version 2.80, for some time, and have been delighted with it. Upon my last visit to the Applian website, I spotted a later version v3.0, which I downloaded and installed. I didn't realise this was a paid-for upgrade, so I uninstalled V3.0, and reinstalled version 2.80.

Ever since then, every time I attempt a conversion, I receive the following dialog box: "ffmpeg.exe has stopped working." I have tried uninstalling and reinstalling version 2.80, but I still get the same message every time.

There is very little information on the Applian website, but there are a lot of hits returned if I Google that phrase. Can anyone suggest a fix for me? I don't have a problem with paying to upgrade to version 3, but don't see why I should have to do, when for me, there's nothing wrong with version 2.80, or at least there wasn't until I installed V3.0. Thanks in anticipation of your help.

FYI Vista Home Premium SP1