I just down a fresh install of Island Rum build 021820201 and am running mac osx High Sierra 10.13.6
in the options I have both internal path to application and wine selected
the manifest is http://patch.savecoh.com/manifest.xml
The problem I have is it says ready to play and I click play. It then says Launching for a few seconds and then boom back to ready to play.
Anyone have any ideas?