Quote:
Originally Posted by wonk
I moved from 2.x to 3.17 when transferring data to a new pc. I used calibre/ transfering all data.
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Others have made all sorts of calibre-specific suggestions. Perhaps they'll help.
Otherwise, I suspect the column hasn't really disappeared completely (or else I'd expect to have seen far more complaints about vanishing custom columns). Is it visible when you go into Preferences and look at the bit about custom columns?
Or for general trouble-shooting, what happens if you install calibre 2.x on your new computer?