Traceback error when exporting DMX

[GoblinCrusher]

Hello, I'm getting this error when trying to export a model from Blender using Source Tools. I've seen some discussions around this subject, but it's been about importing, OR the thread has ended with "oh nvm i figured it out"...

Anyone know what's up?

Blender Source Tools: exporting Draenei_Male
- Baking...
- D:\Users\Alfred\Desktop\LetsTryBlender\DMX\Draenei_Male.dmx
- Loading flex controllers from text block "flex_Draenei_Male"
 WARNING: 8434 excess weight links beneath scene threshold of 0.23 culled on "Draenei_Male".
Array iterator out of range: (index 18074)
Traceback (most recent call last):
  File "C:\Users\alfre\AppData\Roaming\Blender Foundation\Blender\2.79\scripts\addons\io_scene_valvesource\export_smd.py", line 208, in execute
    self.exportId(context, id)
  File "C:\Users\alfre\AppData\Roaming\Blender Foundation\Blender\2.79\scripts\addons\io_scene_valvesource\export_smd.py", line 548, in exportId
    self.files_exported += write_func(id, bake_results, self.sanitiseFilename(export_name), path)
  File "C:\Users\alfre\AppData\Roaming\Blender Foundation\Blender\2.79\scripts\addons\io_scene_valvesource\export_smd.py", line 1710, in writeDMX
    shape_vert = shape.vertices[ob_vert.index]
IndexError: bpy_prop_collection[index]: index 18074 out of range, size 18074

location: <unknown location>:-1

location: <unknown location>:-1

The Source Tools setup is identical to a previous model I exported (just changed relevant paths and names ofc) which worked just fine.

Here's the Blend session (NSFW WARNING, male nudity)
https://www.dropbox.com/s/rf72ffm6asc8uv1/Draedaddy.blend?dl=0

Also QC, 'cause why not:

$CD "D:\Users\Alfred\Desktop\LetsTryBlender\DMX\"

$modelname "avalonsfm\draedaddy\draedaddy.mdl"

$model "body" "Draenei_Male.dmx"

$model "hair" "Draenei_Male_Hair.dmx"

$mostlyopaque

$cdmaterials "models\avalonsfm\draedaddy\"

$sequence "idle" "Draenei_Male.dmx" {
fps 1
}

[Momo]

This is a long shot but it might have something to do with your mirror modifier and the shape keys- since the addon tries to apply all modifiers before exporting, and the mirror modifier can't be used on a mesh with shape keys.

[GoblinCrusher]

That actually turned out to be exactly the issue. Everything worked out fine after I applied the modifiers. Had to redo the flexes I'd make but oh well :)

[Momo]

Great! Glad I could help.

Feel free to mark the post as a solution so others can find it more easily if they run into the same issue as you.