[F3D] Custom material presets cannot be created

[thinedave]

Version: 2.6.0
Game: OOT
Microcode: F3DEX2
Version: Legacy
Feature Set: Default

Attempting to create a custom F3D material preset results in the following error upon pressing the "OK" button:

bpy.ops.material.f3d_preset_add(name="test")

Python: Traceback (most recent call last):
  File "C:\Users\USER\AppData\Roaming\Blender Foundation\Blender\5.1\scripts\addons\fast64-main\fast64_internal\f3d\f3d_material.py", line 4380, in execute
    value = eval(rna_path)
  File "<string>", line 1, in <module>
NameError: name 'f3d_mat' is not defined

Notes

Likely cause: f3d_mat is not defined in the generated file_preset file (would be after file_preset.write("import bpy\n"))

Reproducible Steps

• Create a Fast3D Material
• Select any preset
• Select +
• Name it anything
• Press "OK"

[thinedave]

Ixnay on the likely cause.
f3d_mat is defined through preset_defines, so for some reason exec(rna_path) isn't defining f3d_mat properly for value = eval(rna_path) to later use?

[Dragorn421]

#734