If you have HUD v4.13.00, do go to the Release Candidate box, or the Update Switch, and get the v4.13.02.
There is a sad bug in v4.13.00 that does not transfer keys when you transfer your toys from the v4.13.00 HUD to another HUD.
The latest version has also some new improvements and fixes: read here for cuffs, and here for gags.
Luv, Lulu
