I purchased and successfully removed the DRM from the following title:
http://www.amazon.com/Democracy-Self...7763696&sr=1-2
Now when attempting to convert it to epub, I receive the following traceback:
http://hastebin.com/sosufotuce
I tried changing the input encoding under look and feel and receive the exact same error, likewise from the cli with ebook-convert. If I go into the module and force the encoding to latin-1 I get the following ouput:
http://hastebin.com/juqocuniwa
...which produces an epub, albeit with artefacts.
If I can get in contact with a developer, I'd gladly send input/output files.