That said, I’m not entirely sure what happened. All I know is I was trying to remove a duplicate style which I assume was the one in use apparently. The moment I click ‘remove,’ Gplates completely crashes and exits (not even an error message or anything!) Worse still, somehow the project file itself gets corrupt or something, I’m not entirely sure, but when I re-open Gplates and try to load my project, it simply refuses to work and acts like I never even opened the project. Fortunately all of the other files did not break, however I did have to reconstruct my project, reloading all the files, and then creating all the layers and giving them their draw styles and load order and whatnot, and then saving over the broken project file.
I have no idea what the issue was to be honest.