okay I just started having this problem two days ago....never had it before AND i am using SL viewer (latest version)!!! I have to admit, i tried to update my firesorm and did the clean install instructions (deleted old version first) and for some reason that new install doesn't work, it doesn't go beyond "clearing cache". I have jira'ed this. But now my SL is not showing buildings (I rent a small island in the sky with huts and rocks) on my island and I didn't build them, my owner did. So what the heck???? I am stuck using SL viewer until Firestorm gives me a fix. I completely deleted the new install until they do. ???? Only prims I have rezzed and some of the items that come with the huts (curtains) rez but nothing else. Owner (Felixx Shepherd at Da Vinci Gardens, Kalepa) has reported this and he was told it was Firestorm. But I'm not using Firestorm, I'm using SL Viewer. ??? :-(