I agree with Gebe, some of the problems could well be down to incompatibility with other programs, I have Vue 4 not Pro, I use it because I like what it does when it does it, but I dont really like all the problems with it. To run it reasonably successfully, just using the close program dialogue for other background running programs is not enough, I have to go to msconfig and shut down all start up programs other than systray and explorer. If I dont do this and I use Vue and then try to shut the computer down, most times it wont shut down without me switching it off, its a most inconvenient way to use a program. I decided after a year of not using it because of problems, I had to get something out of it, after all I had paid for it. I found many updates counteracted some problems and introduced others, from one particular update to the next one I couldnt use options at all, then after the next update it worked again. After another update my preview images for importing textures etc, suddenly just become a jumble of random program icons. I have had to put up with that, I have never had a successful answer from eon on any problems, and usually get no further answers if I press it. I have only had serious problems with one other program, just on one upgrade, from the next upgrade on it ran okay again. C4d runs bug free with both my virus scan and firewall enabled, Wings the free program, still beta, runs with only a very occasional bug which Bjorn the creator is usually on top of by the time I visit their forum. All my other programs run okay too, it might be that Vue doesnt like Hewlet Packard computers, so I have had more problems than some have. To be the program that stands out as a problem, makes me wonder if the program is tested on a wide enough range of computers. The number of updates covering an enormous number of bugs must say something even to the most loyal eon customer, certainly things will have to change a lot with Vue 4 and Pro before I would consider spending any more money with eon. Dave