I am using Win Me and am getting the same lock-up problem. I used 2.2.1 for a while with no problems and then suddenly it started freezing a minute or so into the program. Uninstalled and installed 2.2.4 and still having the same problems. I wonder if there is any software conflicts going on. Since most of us are music oriented is there a particular application that we all have that is causing this? Will provide list of software installed after 2.2.1 was installed and working fine and before the freezes started upon request. me@johnpyle.com