Problem importing mesh to S4studios

Hey I’m new in the meshing world, and recently i create a dress that have some bread details. When i import it to s4 studios took like 11 hours and this error shows up 

“The Sims 4 Studio - Version 3.1.3.7
System.AggregateException: Se han producido uno o varios errores. ---> S4Studio.Blender.BlenderException:
File "<string>", line 1, in <module>
File "<string>", line 41, in <module>
File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.70\scripts\addons\s4studio\io.py", line 626, in write
rcol.get_block_index(self, self.ROOT_REFERENCE_TYPE)
File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.70\scripts\addons\s4studio\io.py", line 525, in get_block_index
block.write_rcol(stream, self)
File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.70\scripts\addons\s4studio\cas\geometry.py", line 460, in write_rcol
s.u16(index)
File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.70\scripts\addons\s4studio\io.py", line 231, in u16
self.u(data, 16, order)
File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.70\scripts\addons\s4studio\io.py", line 210, in u
elif size == 16: self.write('H', data, order)
File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.70\scripts\addons\s4studio\io.py", line 183, in write
self.f.write(struct.pack(l, data))
struct.error: ushort format requires 0 <= number <= USHRT_MAX


en S4Studio.Blender.BlenderUtilities.RunBlender(String script, String blend, Boolean background, Boolean check_version) en Z:\thes4studio\TheS4Studio\S4Studio.Shared\BlenderUtilities.cs:línea 248
en S4Studio.Blender.BlenderUtilities.ImportGeom(String custom_blend, String custom_geom, Int32 body_type, String cut) en Z:\thes4studio\TheS4Studio\S4Studio.Shared\BlenderUtilities.cs:línea 361
en S4Studio.ViewModels.CAS.CASLODItem.ImportMesh(BlenderUtilities blender_util, String blender_path) en Z:\thes4studio\TheS4Studio\S4Studio.Shared\ViewModels\CAS\CASLODItem.cs:línea 194
en S4Studio.ViewModels.CAS.CASStandalone.<>c__DisplayClass71_0.<ExecuteImportMesh>b__0() en Z:\thes4studio\TheS4Studio\S4Studio.Shared\ViewModels\CAS\CASStandalone.cs:línea 427
en System.Threading.Tasks.Task.InnerInvoke()
en System.Threading.Tasks.Task.Execute()
--- Fin del seguimiento de la pila de la excepción interna ---
---> (Nº de excepción interna 0) S4Studio.Blender.BlenderException:
File "<string>", line 1, in <module>
File "<string>", line 41, in <module>
File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.70\scripts\addons\s4studio\io.py", line 626, in write
rcol.get_block_index(self, self.ROOT_REFERENCE_TYPE)
File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.70\scripts\addons\s4studio\io.py", line 525, in get_block_index
block.write_rcol(stream, self)
File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.70\scripts\addons\s4studio\cas\geometry.py", line 460, in write_rcol
s.u16(index)
File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.70\scripts\addons\s4studio\io.py", line 231, in u16
self.u(data, 16, order)
File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.70\scripts\addons\s4studio\io.py", line 210, in u
elif size == 16: self.write('H', data, order)
File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.70\scripts\addons\s4studio\io.py", line 183, in write
self.f.write(struct.pack(l, data))
struct.error: ushort format requires 0 <= number <= USHRT_MAX


en S4Studio.Blender.BlenderUtilities.RunBlender(String script, String blend, Boolean background, Boolean check_version) en Z:\thes4studio\TheS4Studio\S4Studio.Shared\BlenderUtilities.cs:línea 248
en S4Studio.Blender.BlenderUtilities.ImportGeom(String custom_blend, String custom_geom, Int32 body_type, String cut) en Z:\thes4studio\TheS4Studio\S4Studio.Shared\BlenderUtilities.cs:línea 361
en S4Studio.ViewModels.CAS.CASLODItem.ImportMesh(BlenderUtilities blender_util, String blender_path) en Z:\thes4studio\TheS4Studio\S4Studio.Shared\ViewModels\CAS\CASLODItem.cs:línea 194
en S4Studio.ViewModels.CAS.CASStandalone.<>c__DisplayClass71_0.<ExecuteImportMesh>b__0() en Z:\thes4studio\TheS4Studio\S4Studio.Shared\ViewModels\CAS\CASStandalone.cs:línea 427
en System.Threading.Tasks.Task.InnerInvoke()
en System.Threading.Tasks.Task.Execute()<---“