I have one machine that refuses to open Adobe Acrobat. I've tried version 6 which i have a disk. I've downloaded the latest off of Adobe (8). I install and uninstall and repair in add/remove. I've used a registry cleaner thinking something might be in there. I've check the reqistry to make sure no old versions are in there. I'm stumped. Such a simple program always works, but not on this machine.