[Witcher 3] Certain repacked USMs don’t load

[K0stov]

Describe the bug Certain USM files, when put into a mod with WolvenKit and packed into the game, are skipped completely when they’re meant to play ingame, instead only flickering black for a second. This happens regardless of whether the files themselves are changed in any way or not. Unfortunately, I don’t know whether this is a problem with WolvenKit or the game itself.

This seems to happen for all storybook cutscenes and more.

Video demonstration

To reproduce

1. Use WolvenKit 0.7.0.3 (last supported version for The Witcher 3).
2. Make a new mod.
3. Add the file movies\cutscenes\flashbacks\rs_1a.usm.
4. Pack and install the mod.
5. Download this test save.
6. Launch the game, load the save.
7. The cutscene should play after approaching the hanged Baron and talking to the sergeant, specifically after either one of these two lines (depending on the chosen dialogue):
   1. Yeah… Always knew the hooch'd be his end.
   2. He was what he was, a right bastard. But I respected him.
8. The cutscene doesn’t play. The screen just flickers black for a second and the game continues as normal.

Expected behavior The cutscene should play where indicated between step 7 and 8.

Game version: Witcher 3 GOTY, 1.32, GOG OS: Windows 10