Yep agreed, Poser5 is fine for me because it still just reads the PZ3 file .. but if you have moved or removed your Poser4 executable file (on the PC) then you'll have some issues. I dont think its Vue not supporting Poser5 (because it just imports the file format rather then any interaction with Poser) but rather CL changed the serial number system and E-on havn't (or may not) update their own engine to support it. My2c