This was caused by a function that got removed in Thunderbird 57.0a1 and was replaced by another function in Thunderbird 59.0a1.
nsIScriptableDateFormat was removed and first replaced with Intl.createDateTimeFormat and later with Intl.DateTimeFormat.
I've uploaded a new version to the development channel of AMO that solves this problem for beta users. Please go to AMO, scroll all the way to the bottom and click View classic desktop site, switch to Other Applications > Thunderbird on the top right, select/search Mail Redirect and scroll down again to open the Development Channel section and download version 0.9.6a1 and install it to your Thunderbird 57.0b* or 58.0b*.
P.S. I try to determine to which account the original messages was sent and use that account as the default from address. If that doesn't work, please file a ticket at https://sourceforge.net/p/mailredirect/tickets/