I'm new to stardock software but...
try uninstalling ALL stardock software again. before you reinstall, delete all stardock folders from the program files directory then manually delete any stardock entry from the registry (provided you know how!!!)
If you don't know how to manually edit the registry BECAREFUL! first back it up!!!! open the registry on vista = all programs >> accessories >> run (or just typr regedit in the search field under all programs.
in the registry, click on my computer at the top of the tree, F3 (find next) search stardock. any entry that comes up delete. When you get the "finished searching registry" message collapse the entire tree and go back to my computer at top and run through again. It is easy to miss an entry because when you find one and delete it, if there is another stardock entry immediately below the one you deleted it will be passed over in the next search.
If that don't work I don't know what to tell ya other than something got corrupt. maybe the verterns here know a better/differnece fix.
good luck
EDIT: Figures...an hour after reading this post, I was showing my girlfriend the Molten skin and the dam dragon disappeared....
My fix was easy though once I applied another skin and reapplied Molten the dragon returned.....LOL gotta be a bug.