LOL. Well, then I guess that I get to look like an idiot. Well, the nexus page quite specifically talks about reporting issues with regards to SE, and nifscan definitely reports errors on nifs which have gone through SSE Nif Optimizer and thus - if I understand correctly - should be in the newer format at that point. What it says about meshes that have gone through the SSE Nif Optimizer seems to align with what NifSkope says, which strongly implies that it understand the new SSE format - certainly it doesn't complain about it being in an unknown format, and it doesn't choke on it. So, between what the nexus page says and what nifscan at least seems to do when using it, I don't know how it could be the case that it doesn't support the newer format, since it definitely seems to. But I clearly don't understand the situation properly. In any case, if nifscan can be trusted when processing the nifs in the DynDOLOD SE resources, then I would argue that what it's complaining about should be fixed, but if it can't be trusted, then obviously, it should be ignored.