calibre will not open
I can no longer get calibre to open for me. I was using the latest updated version (8.67). I tried to create a column built from other columns. I wanted to take a column which could only have integers and put it into a new column that was text based so that I could pick it up when making a catalog. I think I must have messed up in creating the new column because I've been getting a windows error ever since.
Is there a way to get rid of the column I just created without going into calibre itself?
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