Looks like you’re missing a value for Version64. It can be anything. I also usually don’t change the value for MD5.
Sadly, there is no Mac version of BG3 Mod Manager. Fortunately, if BG3 follows the footsteps of Divinity Original 2 in terms of mod management, it won’t be necessary, as you will be able to manage your mods directly from the main menu. Which will happen at some point after launch.
