Okay I did more tests and it appears that my QuickBMS script was corrupting every files when extracting the pak files. So I'm using the UnrealPak from the Conan Exiles devkit and it makes your program exporting files like a charm now, hehehe! Thanks again for your patience and your great tool!
EDIT:
Well... Almost perfect. Your tool stuck on 1 file and can't export it,
Found 169 game files (2 skipped)
Loading package: Mods/RizMods/Characters/humans/materials/FullTransparent_mat.uasset Ver: 510/5 Engine: 0 Names: 55 Exports: 1 Imports: 3 Game: 10000F0
Memory: allocated 143602 bytes in 399 blocks
Loading Material3 FullTransparent_mat from package Mods/RizMods/Characters/humans/materials/FullTransparent_mat.uasset
WARNING: StructProperty "UMaterial3::BaseColor" was not found
WARNING: BoolProperty "UMaterial3::bUsedWithClothing" was not found
WARNING: BoolProperty "UMaterial3::bCanMaskedBeAssumedOpaque" was not found
WARNING: StructProperty "UMaterial3::StateId" was not found
WARNING: Import(Material'Default__Material'): package /Script/Engine was not found
Loaded in 0.001 sec, 8 allocs, 0.00 MBytes serialized in 1 calls.
Exporting objects ...
Exporting Material3 FullTransparent_mat to D:/Downloads/Jeux/ConanMods/UModel/UmodelExport/Mods/RizMods/Characters/humans/materials
Ignoring Material3'FullTransparent_mat' due to empty parameters
Memory: allocated 160657 bytes in 404 blocks
Any idea what it could be?
Here is the file if you need it,
https://yadi.sk/d/KNIZkqKh3XuVs3