Sorry,
One is my easy mistake.
Troubled objects are...
AAAScopeOutL (seems AAAScopeOutL_01 or _02)
AAAScopeOutL_dmg (seems AAAScopeOutL_dmg_01 or _02)
AAAScopeOutR (seems AAAScopeOutR_01 or _02)
AAAScopeOutR_dmg (seems AAAScopeOutR_dmg_01 or _02)
GunSubCanScope1
GunSubCanScope2
AAAScopeOut...02s are made from Create-StandardPrimitives-Cylinder -- Convert To Editable Mesh
_00 and _01 are hand-made polygons
GunSubCanScope...s are made from Create-StandardPrimitives-Box -- Convert To Editable Mesh
At GunSubCanScope1 and GunSubCanScope2, I forgot suffix "_00" in objects' names.
After adding suffix "_00", Max exports them well.
At AAAScopeOutL_02 and AAAScopeOutR_02 , they were made not Cylinder. It's my mis-memory.
I made AAAScopeOutL_02 by Create - Shape - NGon - "16Gon" --- Modifire - Parametric Deformer - Shell --- extend vertexes by manual.
This NGon--Shell made object sometimes occurs freeze at Maraz expoter, I test other simple environment again, and freeze I see.
But at gio's destroyers editing, I used NGon--Shell and exporting well, in my memory... but today...
Then, I replace AAAScopeOutL_02 and AAAScopeOutR_02 by Cylinder. And exported well.
Now I get all the .msh of Kongo BB.
I will show you Kongo's BETA soon.
About NGon--Shell made object problem, I will ask Maraz with simple .max/.cfg zip via AAS's PM.
In August, I send PM to Maraz and I had responce from him.