Epub of Designing_Evolvable_Web_APIs_with_ASPdotNET has issues.
It won't open in Adobe Digital Editions for and the layout is broken for all code/xml samples with IceCream ebook reader. Its also unstably slow with icecream.
Kindle and PDF formats work properly.
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Thanks for your interest in Designing Evolvable Web APIs with ASP.NET. I was able to open the epub in Adobe Digital Editions, but wasn't able to test IceCream ebook reader so I can't speak to the functionality of that.
What are the details of the epub opening in Adobe Digital Editions? Are you getting a message?