Originally Posted by JSWolf
What you can do is run your ePub through FlightCrew and fix all the errors and then run it through ePubCheck 3.0 and fix any additions errors and then done.
Err... Yes, I could do that, and I could make ebooks in notepad.
The whole point of Sigil is its a dedicated epub editor that is supposed to save time and produce distribution-ready books without having to faff around.
It would be nice if we could rely on the built-in validator and reduce the number of steps in our workflow.
I can understand why the dev team didn't incorporate any of the betas or RCs but now there is a finalised, stable release it may be time to use the current validator.