My apologies if this is a silly question. Recently 'Add action' went missing from my project event sheet. I can add events, but there's no way to add actions to events.
I can add actions just fine to previously saved versions, so it seems to be something I've done to the latest version that's caused it, but I can't figure out what it is or how to fix it.
I scanned the manual and forums for this but haven't found anything. A pointer to resolve would be much appreciated. (If it's at all relevant, my layers are all visible and unlocked.)