I have installed Atmosphere RTAS in Mac OS 10.3.9 and would like to change to AU to work with Logic Pro 7. I don't know if I have to make an all knew installation or just update the plug-in. I would be very thankfull for that information.
Just download the latest AU plug-in from the Updates page here:
It works fine with the original dat file, but not with the alias. I put the dat file in the same folder where the AU was installed.