some of my mods doesn't show and error when exporting mesh

hello!! i got some problem, when i want to create 3D mesh and then some of my mods doesn't show up or maybe just show the icon of the sims 4. i think it's like that. but when i click nude top (just show up the icon) succesfully, then i click mesh, the vertices and polygons are 0. i click exporting mesh, and i got error text like this :
The Sims 4 Studio - Version 3.0.1.7
System.AggregateException: One or more errors occurred. ---> S4Studio.Blender.BlenderException:
File "<string>", line 1, in <module>
File "<string>", line 44, in <module>
File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.70\scripts\addons\s4studio\blender\__init__.py", line 44, in load_material
img.save_render(map_resource)
RuntimeError: Error: Could not acquire buffer from image

IMB_loadifffile: couldn't get mapping C:\ProgramData\S4Studio\Scripts\9a4f8602-bdf8-4c96-aa75-2f8ce97f5404\3453CF95-00000000-0000000000000000.dds
IMB_loadifffile: couldn't get mapping C:\ProgramData\S4Studio\Scripts\9a4f8602-bdf8-4c96-aa75-2f8ce97f5404\3453CF95-00000000-0000000000000000.dds


at S4Studio.Blender.BlenderUtilities.RunBlender(String script, String blend, Boolean background, Boolean check_version) in C:\Sims\Studio\S4S\TheS4Studio\S4Studio.Shared\BlenderUtilities.cs:line 248
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) in C:\Sims\Studio\S4S\TheS4Studio\S4Studio.Shared\BlenderUtilities.cs:line 345
at S4Studio.ViewModels.CAS.CASLODItem.ExportMesh(BlenderUtilities blender_util, String blender_path) in C:\Sims\Studio\S4S\TheS4Studio\S4Studio.Shared\ViewModels\CAS\CASLODItem.cs:line 155
at S4Studio.ViewModels.CAS.CASStandalone.<>c__DisplayClass74_0.<ExecuteExportMesh>b__0() in C:\Sims\Studio\S4S\TheS4Studio\S4Studio.Shared\ViewModels\CAS\CASStandalone.cs:line 442
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 1, in <module>
File "<string>", line 44, in <module>
File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.70\scripts\addons\s4studio\blender\__init__.py", line 44, in load_material
img.save_render(map_resource)
RuntimeError: Error: Could not acquire buffer from image

IMB_loadifffile: couldn't get mapping C:\ProgramData\S4Studio\Scripts\9a4f8602-bdf8-4c96-aa75-2f8ce97f5404\3453CF95-00000000-0000000000000000.dds
IMB_loadifffile: couldn't get mapping C:\ProgramData\S4Studio\Scripts\9a4f8602-bdf8-4c96-aa75-2f8ce97f5404\3453CF95-00000000-0000000000000000.dds


at S4Studio.Blender.BlenderUtilities.RunBlender(String script, String blend, Boolean background, Boolean check_version) in C:\Sims\Studio\S4S\TheS4Studio\S4Studio.Shared\BlenderUtilities.cs:line 248
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) in C:\Sims\Studio\S4S\TheS4Studio\S4Studio.Shared\BlenderUtilities.cs:line 345
at S4Studio.ViewModels.CAS.CASLODItem.ExportMesh(BlenderUtilities blender_util, String blender_path) in C:\Sims\Studio\S4S\TheS4Studio\S4Studio.Shared\ViewModels\CAS\CASLODItem.cs:line 155
at S4Studio.ViewModels.CAS.CASStandalone.<>c__DisplayClass74_0.<ExecuteExportMesh>b__0() in C:\Sims\Studio\S4S\TheS4Studio\S4Studio.Shared\ViewModels\CAS\CASStandalone.cs:line 442
at System.Threading.Tasks.Task.InnerInvoke()
at System.Threading.Tasks.Task.Execute()<---


. please help me T_T