Sorry folks, I'm a little late, but poser is only a hobby for me. I'm runnig the english version of poser 5 on a 2200+ Athlon with 2GB RAM DDR with XP Pro, so I think it has nothing to do with the gui, what I first expected. I checked the library and realised that only some of the customized pngs were corrupted.(I've got a lot of them after playing around for 3 years now!) Seems to be that SR3 doesn't tolerate png's with a special size and without transparency! I tried that '3PO-thing' and it worked. Afterwards I have converted the files with only one pixel transparency and now here we are again: it works !(Also double sized pngs) Thank you folks !