Hi, Unreal Engine can be pretty annoying about moving and renaming. Updating redirectors fixes a lot of these issues, but sometimes that just isn’t enough. If that doesn’t work then I don’t know any quick and simple way to fix it. You’ll likely have to hunt down the issues one by one and manually reset the references. When you get an error in UE4 you’ll get some links to the location of the error in the log. Use these to see where you need to fix the reference.
In your specific case the issue is in WBP_UnitHUD, which is not able to access the player controller from the function library I’ve created for accessing ATBTT specific singletons. I’d check out GetPlayerControllerATBTT in BPFL_Singletons and see if everything there looks like it does in a fresh ATBTT project.