Major Description
The MacroScreenRenderer for rendering email attachments is not initialized correctly with the model template TYPE name (e.g. "xsl-fo") as constructor parameter, instead the model template name like "screenfop" is given in.
Therefore the screen based rendering of a xsl-fo type template results in an empty fop xml and the ApacheFopWorker quits with a "Premature end of file" error.
I fixed this within the patch file attached by defining an additional constructor for the MacroScreenRenderer to make the API more intuitive to use.