I'm not having success getting hierarchy tags to work (as described here:
http://manual.calibre-ebook.com/sub_groups.html) on 1.7. This is the first time I've ever tried custom columns or hierarchies.
On my one library that has been around for quite sometime (probably back to 0.8 or so) I can't get it to work.
On a whim I installed a brand new 1.7 instance on a machine that has never had Calibre. Imported some books and created the same column as described no the web page. Created a few tags and things work as expected.
On my machine that doesn't work I just get a single-level list of tags like this:
history.general
history.military
etc.
Any ideas of troubleshooting before starting from scratch with a new library?
Follow-up question: what does the # mean in front of a user-defined column (#genre).