After hours of fighting, I managed to implement a workaround. The
problem is that when creating an ini file from scratch (for example for
MeteoIO) and running it directly (after saving it to a file), the
workflow output path can not be read (${key:OUTPUT::METEOPATH} can never
be read, it is actually empty). This comes from the fact that
MainWindow.getINI() does not contain the same keys as in the INIParser
just after saving... So the dirty fix is to copy this content to
MainWindow.ini_ just after saving so the WorkFlow object has access to
the user provided configuration. Hopefully, a clean fix can be developed
at some point.