Hey Myliana, I know this is a bit late, but just read the thread, and if you're still having problems I was wondering if you and your significant other's PC's are networked together, and operating the same copy (same Registration code) of Poser4.03 on both PC's. The reason I ask this is because if you installed on his first, and then on yours, and are networked, Poser4.03 has an internal check and kill-switch property that will crash any other PC's operating the same program on a network. If this does not apply to you, please disregard question, and I hope you find a solution (or did find one). Good luck, and Take care.