Hi and thanks for this great tool.
I noticed a thread in 2013 looking at a bug with the following error:
Unable to create a canvas to draw image. This indicates a problem with the Windows GDI graphic subsystem. Was this resolved?
I get this error for any workbook any combination of size/format/setting "export for publication "
Similar, The batch export command comes up with an error stating that the charts could not be exported
Thanks for your help