Can't Import Mesh, error message

I'm trying to edit the mesh of a sliding door from island living, by adding mesh parts from 2 other files. I've done this a couple times before without issue and don't know why this won't import. I've left everything else alone and only replaced the actual door part with my mesh, and made sure the cut number matched. I haven't really messed with the texture maps yet, except making sure all mesh pieces are on the map. I just want to make sure the mesh works first. I'm not sure if I made my vertex groups/weight correct or not on my mesh. The only group I touched in blender was my "barn door". I've tried looking at tons of similar topics to this but it seems like everyone has a specific issue that needs a custom tailored solution when it comes to meshes not importing. Any help is greatly appreciated 

Link to package and blender files drive.google.com/open?id=1Ss_Hks3e9_eGgi6xNKFfkOqRDMhx42dh

Error message I get when trying to import mesh:

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\objectexporter.py", line 14, in <module>

save_lod(mlod,geometry_state)

File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.76\scripts\addons\s4studio\buybuild\blender.py", line 393, in save_lod

save_mesh(blender_mesh, m, new_mesh, geometry_state)

File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.76\scripts\addons\s4studio\buybuild\blender.py", line 212, in save_mesh

apply_all_modifiers(blender_mesh)

File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.76\scripts\addons\s4studio\blender\__init__.py", line 135, in apply_all_modifiers

bpy.ops.object.convert(target='MESH')

File "C:\Program Files\Blender Foundation\Blender 2.76 (for sims)\2.76\scripts\modules\bpy\ops.py", line 189, in __call__

ret = op_call(self.idname_py(), None, kw)

RuntimeError: Operator bpy.ops.object.convert.poll() failed, context is incorrect

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.ImportMlod(String fileName, String mlod, String rig, String state)

at S4Studio.ViewModels.ObjectLodItem.ImportMesh(BlenderUtilities blender_util, String blender_path)

at S4Studio.ViewModels.ObjectLodItem.<>c__DisplayClass49_0.<ImportMesh>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\objectexporter.py", line 14, in <module>

save_lod(mlod,geometry_state)

File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.76\scripts\addons\s4studio\buybuild\blender.py", line 393, in save_lod

save_mesh(blender_mesh, m, new_mesh, geometry_state)

File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.76\scripts\addons\s4studio\buybuild\blender.py", line 212, in save_mesh

apply_all_modifiers(blender_mesh)

File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.76\scripts\addons\s4studio\blender\__init__.py", line 135, in apply_all_modifiers

bpy.ops.object.convert(target='MESH')

File "C:\Program Files\Blender Foundation\Blender 2.76 (for sims)\2.76\scripts\modules\bpy\ops.py", line 189, in __call__

ret = op_call(self.idname_py(), None, kw)

RuntimeError: Operator bpy.ops.object.convert.poll() failed, context is incorrect

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.ImportMlod(String fileName, String mlod, String rig, String state)

at S4Studio.ViewModels.ObjectLodItem.ImportMesh(BlenderUtilities blender_util, String blender_path)

at S4Studio.ViewModels.ObjectLodItem.<>c__DisplayClass49_0.<ImportMesh>b__0()

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

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