I have a stack that has a 45MB disk image in a custom property. When I load it into Rev 2.7, it loads instantly. When I make a standalone out of it, it takes about 35 seconds to load. I can load Rev and the stack in less than 10 seconds total. This includes a number of plugins. Why the large discrepancy? My system: Dual 2.7 Ghz G5 with 1.5 Gigs of RAM.