Weed Exporter: international characters in application folder pathname
Weed Exporter uses a component that is part of the Microsoft Windows Media Format SDK 9 Series. It appears that this component doesn't run properly when installed in a folder whose pathname contains international characters. So for instance, if Weed Exporter is installed in D:\Misc\Büro, the following error message will popup upon generation of an output file:

There is no fix for this bug at the moment, but the workaround consists in installing the application in a folder whose pathname does not contain any international characters.
Thanks to Matthias at
oszillation.de for his help on this one!