I think I’ve failed to mention that the toolkit works fine in UE4.16 preview. Just open a 4.15 copy of your ATBTT project in 4.16 preview and it should work without any errors (though let me know if any of you spot any). As per usual I won’t send a new version to Epic until the full release of 4.16 is out. If you decide to work in the preview make sure to back up your work as you should with any project.