After I installed 1.5, I opened a project in Logic Pro that used Miniraze, and got a Logic error that says Miniraze plugin is not installed. So I had to quit Logic, delete the 1.5 AU plugin and move the 1.1.6 version back into the AU plugins folder. My Logic song loaded correctly after that.
I've been really excited about Miniraze in some of my new projects, but if plugin updates won't be backwards-compatible with existing Logic sessions (like I experienced here), I would have to stop using Miniraze. Hopefully this can be fixed.
