Weird Python Error when Attempting to Export

[Indoril Nerevar]

I'm getting the following traceback error when attempting to export my project using BleST. I don't know if I did something on my end or not, but the issue didn't start happening until recently.

Python: Traceback (most recent call last):
  File "C:\Users\Kyle Morrill\AppData\Roaming\Blender Foundation\Blender\3.4\scripts\addons\io_scene_valvesource\export_smd.py", line 211, in execute
    self.exportId(context, id)
  File "C:\Users\Kyle Morrill\AppData\Roaming\Blender Foundation\Blender\3.4\scripts\addons\io_scene_valvesource\export_smd.py", line 551, in exportId
    self.files_exported += write_func(id, bake_results, self.sanitiseFilename(export_name), path)
  File "C:\Users\Kyle Morrill\AppData\Roaming\Blender Foundation\Blender\3.4\scripts\addons\io_scene_valvesource\export_smd.py", line 1419, in writeDMX
    for root_elems in [writeBone(bone) for bone in self.armature.pose.bones if not bone.parent and not (add_implicit_bone and bone.name == implicit_bone_name)]:
  File "C:\Users\Kyle Morrill\AppData\Roaming\Blender Foundation\Blender\3.4\scripts\addons\io_scene_valvesource\export_smd.py", line 1419, in <listcomp>
    for root_elems in [writeBone(bone) for bone in self.armature.pose.bones if not bone.parent and not (add_implicit_bone and bone.name == implicit_bone_name)]:
  File "C:\Users\Kyle Morrill\AppData\Roaming\Blender Foundation\Blender\3.4\scripts\addons\io_scene_valvesource\export_smd.py", line 1407, in writeBone
    for child_elems in [writeBone(child) for child in bone.children]:
  File "C:\Users\Kyle Morrill\AppData\Roaming\Blender Foundation\Blender\3.4\scripts\addons\io_scene_valvesource\export_smd.py", line 1407, in <listcomp>
    for child_elems in [writeBone(child) for child in bone.children]:
  File "C:\Users\Kyle Morrill\AppData\Roaming\Blender Foundation\Blender\3.4\scripts\addons\io_scene_valvesource\export_smd.py", line 1407, in writeBone
    for child_elems in [writeBone(child) for child in bone.children]:
  File "C:\Users\Kyle Morrill\AppData\Roaming\Blender Foundation\Blender\3.4\scripts\addons\io_scene_valvesource\export_smd.py", line 1407, in <listcomp>
    for child_elems in [writeBone(child) for child in bone.children]:
  File "C:\Users\Kyle Morrill\AppData\Roaming\Blender Foundation\Blender\3.4\scripts\addons\io_scene_valvesource\export_smd.py", line 1407, in writeBone
    for child_elems in [writeBone(child) for child in bone.children]:
  File "C:\Users\Kyle Morrill\AppData\Roaming\Blender Foundation\Blender\3.4\scripts\addons\io_scene_valvesource\export_smd.py", line 1407, in <listcomp>
    for child_elems in [writeBone(child) for child in bone.children]:
  File "C:\Users\Kyle Morrill\AppData\Roaming\Blender Foundation\Blender\3.4\scripts\addons\io_scene_valvesource\export_smd.py", line 1388, in writeBone
    relMat = cur_p.matrix.inverted() @ bone.matrix
ValueError: Matrix.invert(ed): matrix does not have an inverse

Any help would be appreciated! I'm doing a project for a friend and am planning on finishing it up soon! Thank you very much for any help you can provide.

[Pte Jack]

This is just a guess, but do you have a matrix type modifier in the project and have you tried to apply it before exporting?

[Indoril Nerevar]

Originally posted by Pte Jack:

This is just a guess, but do you have a matrix type modifier in the project and have you tried to apply it before exporting?

What would that be? Maybe I added one by accident but I wouldn't know what that is...

[Artfunkel]

You could also have a bone scaled to 0. This can't be exported.