@Manichean - I see you are playing hot potato with this one, I was going to reply to the poster to tell them for the same reasons you are having difficulty in placing this.
@sorin - You don't actually ask a question. If you have an issue with Kindelabra or Kindle Collection Manager, you should go to their relevant forums/threads on MobileRead and ask there.
If however you are having difficulty with the Kindle Collection plugin, then you should have just posted on the Kindle Collections plugin thread
. I am sure meme or one of the users of that plugin would be happy to assist you.