Can't export meshes

Some meshes can't be exported by Sims 4 studio. But some can be.
I don't know what's wrong.
It's error message is as below.
There are some broken languages about Runtime error but I can't recognize it.
Please help me to solve this issue.
________________________________________________________________

The Sims 4 Studio - Version 3.1.2.4

System.AggregateException: One or more errors occurred. ---> S4Studio.Blender.BlenderException:

File "<string>", line 2, in <module>

File "C:\ProgramData\S4Studio\Scripts\geomimporter.py", line 49, in <module>

material = load_material('DiffuseMap', u'C:\\ProgramData\\S4Studio\\Scripts\\29eb2251-1187-40ec-8399-3ce834b64824\\3453CF95-00000000-0000000000000000.dds')

File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.76\scripts\addons\s4studio\blender\__init__.py", line 44, in load_material

img.save_render(map_resource)

RuntimeError: ?ㅻ쪟 : ?대?吏€?먯꽌 踰꾪띁瑜??살쓣 ???놁쓬



IMB_loadifffile: couldn't get mapping C:\ProgramData\S4Studio\Scripts\29eb2251-1187-40ec-8399-3ce834b64824\3453CF95-00000000-0000000000000000.dds

IMB_loadifffile: couldn't get mapping C:\ProgramData\S4Studio\Scripts\29eb2251-1187-40ec-8399-3ce834b64824\3453CF95-00000000-0000000000000000.dds

AL lib: (EE) UpdateDeviceParams: Failed to set 44100hz, got 48000hz instead





at S4Studio.Blender.BlenderUtilities.RunBlender(String script, String blend, Boolean background, Boolean check_version)

at S4Studio.Blender.BlenderUtilities.ExportGeom(String custom_blend, String custom_geom, String custom_texture, String caspart_name, String mannequin_folder, String mannequin_texture, String rig_resource)

at S4Studio.ViewModels.CAS.CASLODItem.ExportMesh(BlenderUtilities blender_util, String blender_path)

at S4Studio.ViewModels.CAS.CASStandalone.<>c__DisplayClass74_0.<ExecuteExportMesh>b__0()

at System.Threading.Tasks.Task.InnerInvoke()

at System.Threading.Tasks.Task.Execute()

--- End of inner exception stack trace ---
---> (Inner Exception #0) S4Studio.Blender.BlenderException:

File "<string>", line 2, in <module>

File "C:\ProgramData\S4Studio\Scripts\geomimporter.py", line 49, in <module>

material = load_material('DiffuseMap', u'C:\\ProgramData\\S4Studio\\Scripts\\29eb2251-1187-40ec-8399-3ce834b64824\\3453CF95-00000000-0000000000000000.dds')

File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.76\scripts\addons\s4studio\blender\__init__.py", line 44, in load_material

img.save_render(map_resource)

RuntimeError: ?ㅻ쪟 : ?대?吏€?먯꽌 踰꾪띁瑜??살쓣 ???놁쓬



IMB_loadifffile: couldn't get mapping C:\ProgramData\S4Studio\Scripts\29eb2251-1187-40ec-8399-3ce834b64824\3453CF95-00000000-0000000000000000.dds

IMB_loadifffile: couldn't get mapping C:\ProgramData\S4Studio\Scripts\29eb2251-1187-40ec-8399-3ce834b64824\3453CF95-00000000-0000000000000000.dds

AL lib: (EE) UpdateDeviceParams: Failed to set 44100hz, got 48000hz instead





at S4Studio.Blender.BlenderUtilities.RunBlender(String script, String blend, Boolean background, Boolean check_version)

at S4Studio.Blender.BlenderUtilities.ExportGeom(String custom_blend, String custom_geom, String custom_texture, String caspart_name, String mannequin_folder, String mannequin_texture, String rig_resource)

at S4Studio.ViewModels.CAS.CASLODItem.ExportMesh(BlenderUtilities blender_util, String blender_path)

at S4Studio.ViewModels.CAS.CASStandalone.<>c__DisplayClass74_0.<ExecuteExportMesh>b__0()

at System.Threading.Tasks.Task.InnerInvoke()

at System.Threading.Tasks.Task.Execute()<---