Not sure if this is a bug, but it seems like something that shouldnt cause the project to fail packing.
If you have a static mesh used in a blueprint, and doesnt have simulate physics enabled, as well as having CCD (continuous collision detection) enabled it wont allow the project to package and will not produce an error as to why.
This is the error that is shown in the log, but it prevents the compiler from packaging.
LogPhysics:Error: PHYSX: (d:\ori.cohen_g6217_physics\engine\source\thirdparty\physx\physx-3.3\source\physx\src\NpRigidBodyTemplate.h 437) eINVALID_PARAMETER : RigidBody::setRigidBodyFlag: kinematic bodies with CCD enabled are not supported! CCD will be ignored.