I had the same message by trying to use clothes (in the character librairy ). It was a dress i downloaded somewhere, and which was perfectly working; and suddenly, it stopped working, with this error, and a lot of other clothes stoped working too. I have an error, poser also says there is a lack of memory (i have 256), and everything is in my window disappears, including, character, light, etc etc.. what should i do..?