The new version of IMVU poses several problems with this Rooms (And others rooms and products), it is recommended to use the older version until the bugs are fixed by the Staff of IMVU.
For desactivate the new UI, in the menu of your Messenger IMVU : Settings... unselected Use New UI.
And restart your IMVU.
If persisting bugs, use Menu Help of your IMVU Messenger and Tools... Clear your IMVU cache.
And restart.
Waiting the full loading and you can use the triggers sn01 to sn17 and bg01 to bg17.

Pro Photo room derivable : 17 Backgroud colors and 17 Scenes !!!
THEME : Color of nature


FOR DEVELOPERS
For create your pro photo room use | Derive from product | link in the bottom of this page...

Triggers for Background : bg01 to bg17
Triggers for Scenes : sn01 to sn17 and sn for clear scene
Triggers for help scene : helpon helpoff.

For background, use a JPG to 32x32 pix (Material : P01-M01 to P17-M17 in your Previewer)
For Scene use a pictures JPG to 256x256 or 512x512 pix (Material : P18-M20 to P34-M36 in your Previewer)
For Help menu, use a picture JPG 256x256 or 512x512 (Material : P35-M18 in your Previewer)
ADVICE : Not exceed 120 KB for each pictures, either a total of 2.048 KB (2 MB) for 17 pictures.