Unable to export mesh

First time using Sims 4 Studio.

I have downloaded Blender version 2.76 and 2.70, I'm using Sims 4 Studio Wishes (Windows version).

I was able to export one female hair texture/mesh before I started getting this error;


The Sims 4 Studio - Version 3.1.3.0

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\\ea8c2c8e-3102-4da2-a670-9ee60174d5f1\\3453CF95-00000000-0000000000000000.dds')

File "C:\Users\[UserName].GBPC\AppData\Roaming\Blender Foundation\Blender\2.76\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\ea8c2c8e-3102-4da2-a670-9ee60174d5f1\3453CF95-00000000-0000000000000000.dds

IMB_loadifffile: couldn't get mapping C:\ProgramData\S4Studio\Scripts\ea8c2c8e-3102-4da2-a670-9ee60174d5f1\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\\ea8c2c8e-3102-4da2-a670-9ee60174d5f1\\3453CF95-00000000-0000000000000000.dds')

File "C:\Users\[UserName].GBPC\AppData\Roaming\Blender Foundation\Blender\2.76\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\ea8c2c8e-3102-4da2-a670-9ee60174d5f1\3453CF95-00000000-0000000000000000.dds

IMB_loadifffile: couldn't get mapping C:\ProgramData\S4Studio\Scripts\ea8c2c8e-3102-4da2-a670-9ee60174d5f1\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()<---







Uninstalling/re-installing both programs has not helped. Hair is missing from the model. Texture exports as a 'blank' black box, and this is the error when I try to export the mesh. 

I had a hard time navigating the forums so I have no idea if this is easily fixable. 

Edit: This is in the 'CAS' option, I have my creator name in the 'Creator Name' section, and 'Create CAS Standalone' is the option selected.