The following has just been posted on the Vue tech support forum: "Yes, that's actually a limitation in release 5.01. The upcoming release 5.02 (sometime next week) will lift this limitation (as well as fixing most of the problems that have been reported). The reason why this limitation was in there in the first release is because of the massive memory requirements for global illumination and radiosity rendering. 5.02 will let you go beyond the 4096 limit, but will still require a lot of memory to do the job." Good news indeed! Bernie