The latest version of the FTW Transcriber is 3.8. If after upgrading to 3.8 you see a message that your key is no longer recognized, simply reset it here.
If you get an error message after installing version 3.8, or your pedal does not work with it, uninstall the FTW Transcriber FIRST, then restart your PC, then download and install the new version, so that you can do a “clean” install.