[westofpecos]

I had been gently testing calibre for the past few months with a small number of titles, to figure out if it would be able to manage the thousands of ebooks I am using as sources for a book I am writing. Last week I concluded enthusiastically that it would be perfect for the task.

So, over the past two weeks, I imported about 1500 ebooks into calibre, and spent tens of hours tagging them appropriately to what I use them for. To make sure that I would not have backup issues, I mounted the calibre library in a dropbox folder. I have about 20G of data, and Dropbox is all sync'ed.

This evening, I completed all the tagging I needed to do (a lot of hard work, it is 3:00am as I write). I checked the database as I always do every few hours, had calibre delete a single folder that did not have books showing in the db (it was empty), closed and reopened calibre, had a last look at the book list, and found that 95% of my tags are gone.

I am horrified, as I spend probably 50 hours tagging all these books. What is weird is that some books I tagged a few minutes ago are still tagged. But the very large majority of the books have lost all tagging. Those that still have tags seem to have all the tags they had.

Beyond the db check that I just did, these are the two significant actions I did recently:
- I upgraded a few hours ago to 1.33 from 1.32
- After completing the individual tagging, I applied a tag to 90% or so of the books in the library. After doing so, all the books looked appropriately tagged (so the tagging operation did not destroy anything I had). That is when I checked the db. After that, I closed calibre, then reopened it. That's when I found practically all the tags gone.

Any thoughts? I can't believe I just wasted 50 hours of tedious work.

And - no, I did not do any backups, I counted on dropbox to protect me from problems.

Thanks for your help!