Is this tip for Poser5 only? My Poser4 libraries have always opened quickly, and there is a file named "ImageIO_Mac.mrw" in my ImageIOPlugins folder. Removing or renaming this file makes no difference - the libraries still open quickly. I have Quicktime6.1 installed. Maybe my 8GB Runtime counts as tiny nowadays? Glad so many benefitted from the tip. Good catch SWAMP.