Hi, I just purchased 5.5 PTE deluxe a few days ago and have been having a lot of problems with it on my Vista computer. Here's what's been happening recently: I open PTE and start to edit my slide show which is now at about 900 slides of about 5MB each. After about three minutes of editing I start getting Image Load errors and then the program disappears. When I reload, the images that wouldn't load before load fine and then the same error creeps in with new pictures and then PTE crashes. I've got 2GB RAM and a Q6600 Intel chip. Nvida video. I am NOT running SP1. I am running Vista Business 32 bit. Any tips on where to start troubleshooting? I'm disappointed so far with my purchase as I was hoping to work on putting together a slide show instead of troubleshooting. My guess is that I'm overloading the program. 900 x 5mb is about 4 GB plus. I created a slide show and it was 3.39 GB. Thanks in advance for anyone's help! Peter McG