There is a fairly common bug in SL that causes items to disappear when they are rezzed on sculpts or mesh prims. However it is usually very easy to fix.
Please follow the steps below to have your lost items restored.
- On your Firestorm viewer go to “Avatar” on the top menu and then “Preferences”
- In preferences go to “Network & Files” and then to the “Directories” tab
- Next select “Clear Inventory Cache” and then relog
- When you log back in open your inventory and allow it to fully reload, this may take a few minutes.
- Once your inventory has fully loaded you should be able to locate the item that was lost.
- If the item is still missing I would recommend contacting the creator for a replacement or filing a ticket with LL regarding inventory loss.