Some Werewolf Animations wont export - Error

Hello, I am trying to export the werewolf nap animation and I am getting an error. I tried to export non-werewolf animations and they were fine. Some of the werewolf animations are also fine, but some not. this is the error:

The Sims 4 Studio - Version 3.1.5.9

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

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

File "C:\ProgramData\S4Studio\Scripts\clipimporter.py", line 41, in <module>

clip.read(stream)

File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.76\scripts\addons\s4studio\animation\__init__.py", line 755, in read

evt = self.Event.factory(x, evt_b, length)

File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.76\scripts\addons\s4studio\animation\__init__.py", line 569, in factory

return ClipResourceSims4.EventUnknown(stream, type_id, length)

File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.76\scripts\addons\s4studio\animation\__init__.py", line 575, in __init__

ClipResourceSims4.Event.__init__(self, stream)

File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.76\scripts\addons\s4studio\animation\__init__.py", line 542, in __init__

Serializable.__init__(self, stream)

File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.76\scripts\addons\s4studio\core.py", line 4, in __init__

self.read(stream, resources)

File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.76\scripts\addons\s4studio\animation\__init__.py", line 580, in read

self.unknown_bytes = s.bytes(len(self.unknown_bytes))

File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.76\scripts\addons\s4studio\io.py", line 34, in bytes

return [self.u8() for i in range(count)]

File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.76\scripts\addons\s4studio\io.py", line 34, in <listcomp>

return [self.u8() for i in range(count)]

File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.76\scripts\addons\s4studio\io.py", line 79, in u8

return self.u(8, order)

File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.76\scripts\addons\s4studio\io.py", line 60, in u

if size == 8: return self.read('B', 1, order)

File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.76\scripts\addons\s4studio\io.py", line 30, in read

l = struct.unpack(order + l, d)[0]

struct.error: unpack requires a bytes object of length 1

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.ExportClip(String custom_blend, String custom_clip, String mannequin_folder, String mannequin_texture, String rig_resource)

at S4Studio.ViewModels.Animation.AnimationPackCustomContent.<>c__DisplayClass152_0.<DoExport>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\clipimporter.py", line 41, in <module>

clip.read(stream)

File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.76\scripts\addons\s4studio\animation\__init__.py", line 755, in read

evt = self.Event.factory(x, evt_b, length)

File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.76\scripts\addons\s4studio\animation\__init__.py", line 569, in factory

return ClipResourceSims4.EventUnknown(stream, type_id, length)

File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.76\scripts\addons\s4studio\animation\__init__.py", line 575, in __init__

ClipResourceSims4.Event.__init__(self, stream)

File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.76\scripts\addons\s4studio\animation\__init__.py", line 542, in __init__

Serializable.__init__(self, stream)

File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.76\scripts\addons\s4studio\core.py", line 4, in __init__

self.read(stream, resources)

File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.76\scripts\addons\s4studio\animation\__init__.py", line 580, in read

self.unknown_bytes = s.bytes(len(self.unknown_bytes))

File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.76\scripts\addons\s4studio\io.py", line 34, in bytes

return [self.u8() for i in range(count)]

File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.76\scripts\addons\s4studio\io.py", line 34, in <listcomp>

return [self.u8() for i in range(count)]

File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.76\scripts\addons\s4studio\io.py", line 79, in u8

return self.u(8, order)

File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.76\scripts\addons\s4studio\io.py", line 60, in u

if size == 8: return self.read('B', 1, order)

File "C:\Users\[UserName]\AppData\Roaming\Blender Foundation\Blender\2.76\scripts\addons\s4studio\io.py", line 30, in read

l = struct.unpack(order + l, d)[0]

struct.error: unpack requires a bytes object of length 1

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.ExportClip(String custom_blend, String custom_clip, String mannequin_folder, String mannequin_texture, String rig_resource)

at S4Studio.ViewModels.Animation.AnimationPackCustomContent.<>c__DisplayClass152_0.<DoExport>b__0()

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

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



Thanks in advance for your help.