Fixing EPUB Validator using Calibre

[@dlma7196]

Thank you so much! I had a ePub book that was taking a long time to load and turn pages on my Nook Glowlight Plus.

[@Cwest183]

Glad the video helped! Calibre is a bit funny this way with some settings.

[@imaperson2549]

cant find preferences for the eBook upon new update as the eviewer doesn't show the side bar for tools

[@andres2595]

That worked just as you said. Thank you

[@onemas7379]

your method work for me. Except from one book, i find out in the edit book(calibre) you have run check and it fix

[@authorspromotion]

hi hope you are fine i am getting epub errors from last 1 year and never able to solved...i saw your vedeo now ....i have calibri ...i followed your video..i import a word file to covert it into epub ....but after importing when i click on view it open the word file instead of showing the options that you are getting ...i am using latest version of calibri please let me know how to solve the problem i will wait thanks

[@Cwest183]

It sounds like two things. First, Calibre did update it’s UI. To open the viewer panel, you have to right click it for the panel to appear. Still mostly the same as it was before. The other thing is Calibre’s behavior needs to be set. Click on the main page Preferences, then Behavior, and have preferred output format as EPUB. This should set the program to EPUB. You can also click the little drop down arrow on View and click View Specific Format (Alt+V) and set that way. I hope any of this information helps your issue!

[@ramo61_59]

i cant open my epub on my phone should i do the same thing and than transfer it to my phone?

[@Cwest183]

It’s been a while since I’ve run into this problem, but if it’s the Null code, more than likely this is the solution. A lot of reading software “should” overwrite it (Nook/Kindle/Kobo/Apple…) but it may be this Calibre checkmark system