How to enter multiple tasks at once as batch or text import in OmniPlan?
You need to paste the list into the list of tasks, not into the title of a single task. Make sure you've selected a task, rather than the title field of a task.


This is the title field selected. ⌘V here pastes the list into the title field of a task.


This is a task selected. ⌘V here pastes the list in as separate tasks.