Quote:
Originally Posted by Warren_Harding
I clicked on the Wand button (with all the fields empty) and it fails to generate a preview.
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Do you mean it didn't do anything, or it opened up a blank window?
It should open up a window titled Regex Builder. Looks something like the attached screenshot. If the Preview window is blank, maybe calibre doesn't see anything?
Although seriously, it should at least show html and body tags.
If it doesn't open this window, maybe you need to wait longer for calibre to parse the entire PDF. The one I've shown is a 91 KB, 10-page short story offered for free from the author's website and opened pretty fast, but for a full-blown novel over 200x that size, it might take far longer to load.