Help:VE285

Empty attachment name in mesh file: <file> (original name: '<name>').

An attachment point in this mesh has no usable name. This usually happens when an attachment point is left with a blank or invalid name in the 3D modelling tool, or its name is lost during export.

Attachment points must be uniquely named so that config and script can reference them. Give every attachment point a valid name and re-export the mesh.

From trainz-build 5.8 this is reported as an error; on earlier assets it is a warning.