Learn how easy it is to sync an existing GitHub or Google Code repo to a SourceForge project! See Demo
I have a script that cannot be converted by the iss2nsi plugin (from your front page). It sais 'parameter flags contains an unknown flag'. The inno setup script is correct though...
So I think you'll have to update your plugin :)
The iss script
The parameter is the replacesameversion in the files section of the ISS