I've just realized an issue when I added all my ebooks ages ago. All my html books were added as zip files and are inaccessible. I can find no way to fix this... I discovered it when I was adding a single html file today and couldn't do it. When I poked around, I found over 300 zip format books but no html ones. I only use calibre sporadically so am far from an expert.
Does anyone have any clue what went wrong and what i can do to fix it?
I tried searching the forum for this but had no luck