A few avies have submitted bug reports regarding using the key for the first time with the Release Candidate gear (with HUD v5.6.x), and getting the following error:

llDialog: must supply a message

This is fixed in the next RC refresh.

Meantime, the temporary workaround is to: 1. Reset owner on HUD menu (or via “/1.owner”). 2. Re-instate owner .

xoxo, Lulu