export to pdf - web addresses must include http:// in the Webpage:  section
http://www.en.wikibooks.org/wiki/Cookbook:Pancake in the Webpage:  section will export correctly to pdf and the pdf will open.
www.en.wikibooks.org/wiki/Cookbook:Pancake  in the Webpage:  section will appear to export as a single pdf without an error generated and the pdf will not open
Export all recipes including  the one with www.en.wikibooks.org/wiki/Cookbook:Pancake in the  Webpage: section, will generate an error and the pdf will not open
error: "ValueError: format not resolved www.en.wikibooks.org/wiki/Cookbook:Pancake"
All other export formats are working wonderfully.