I purchased the ESX24 and attempted to install it last night. Here's what happens: I load the installation CD and it asks me to click which version of Logic I have. I don't click them because I have Platinum 5.3.0 (for os9). (Based on the information during installation, it want me to upgrade from 4.0 - 4.5 to 4.5.1. I'm nervous about clicking on of these because I have the most recent version installed.) I begin the installation and it tells me that "no version of Logic Audio is compatible with ESX24". thoughts???? this was also post on the LUG list Thanks in advance. Antcinq@... Tony