Hello everybody,
this is my first thread, so I hope to write it in the right way...
I prepared my first e-book for a friend of mine with Sigil (vers. 0.7.4), using xhtml and css code (it's my job and so I had no problems using them).
I did epub file validation with FlightCrew and everything was ok,
but doing validation with Epubcheck (vers. 4.0.0, using command line tool) I got this:
Validating against EPUB version 2.0 - custom validation
WARNING(OPF-020):
epubFilePath/OEBPS/content.opf(-1,-1):
Excessive number of spine items.
Validating using EPUB version 2.0 rules.
Check finished with warnings
epubcheck completed
...I don't understand what it means! (...because of my bad English?

)
The number of <itemref> in <spine> (content.opf file) is the same number of chapters of my e-book... perhaps they are too much?
In Internet I haven't found anything about this warning... it seems I'm the only one who got it!
I'll be grateful to everyone who can help me to fix it... I'm trying for hours!
Thank you, thank you, thank you...
Elisa