I know officially Logic 8 isn't compatible with Lion.
However, I know you can edit the plist (inside the package), or open it with terminal, to make it open under Lion. And it launches. (See this thread on the apple discussion forums).
The question is, is it buggy, and do plug-ins work etc? – It would be great if someone who has tried this could post here!
Best Answer
Logic Pro 8 uses some Carbon libraries. Carbon is no longer supported in Lion. That's why Logic Pro 8 is unstable running on OS X 10.7 Lion.