@Leopard20, thank you, really appreciate you doing that. Couldn't find a way to edit that part of the task.

Upgraded to OS X 14.7 problem persists (not sure if I should open a new task due to the OS change).

Further info: I have now uninstalled and reinstalled Arma and the bug persists.

Hey @dedmen, sorry for the delay. Followed the steps on the link and checked AppDataLocal, there are no files of the type mentioned in there.