Thanks: I know what that error is - ummmmm I missed something in the source code for that build! That problem is obv. fixed in the builds I'm using.
Let me try making a new .exe package (and hopefully installer too?) and get back to you. ok. so at least i can build EXE files again :)
You should be able to unzip that folder and run the Twine.exe straight from this. You could copy it over your existing Twine install but might want to backup your "targets" folder or you'll lose custom changes you've made to your storyformats.
This version is also not without it's problems: you'll notice the window title blink away as the mouse-moves. I'm in the middle of trying to get tooltips to work.
--Et