StatisMeshComponent NOT Supported

I’m wondering why am I getting a tonne of these error. Anybody know why? I’m only noticing these in 4.9 .

LogNetPackageMap:Warning: FNetGUIDCache::SupportsObject: StaticMeshComponent /Game/PC_Maps/UEDPIE_1_Playtest1_RoadNetwork.Playtest1_RoadNetwork:PersistentLevel.CurbGenerator6.StaticMeshComponent_184 NOT Supported.

This object is just a procedural generator for instancedstaticmesh. Nothing fancy.