So I create an .opl for a custom esm.
All works fine when editing a file based on the base NV esm and the custom esm (as that is all that was loaded when I created it).

Later I'm editing an esp which also includes DeadMoney as a master, which bumps the position of the custom esm down a notch.
The .opl then throws a wobbly about not finding the objects. So I'm guessing it's a load order thing.
Is this normal or have I missed something?