Two i can think of, 1 there are no rsr files in the librarys so you can't do the render and paste trick to get the nice thumbnail.......i'm not sure if thats coz of the png's but its annoying anyway...2 the models take a bit longer to load coz there is no RSR file in the geometries..or rather it doesn't read them...but see above as to why thats good too ;o)...Steve