[x64] [MSVC-only] Supertux x64 starts, but hangs as soon as you try to open a level.

ReactOS version: reactos-bootcd-0.4.15-dev-7131-ge4d03f4-x64
Arch: x64 - Amd64 - Win64
Compiler: MSVC x64 (only)
Environment: VBox VM
Software tested: SuperTux-v0.5.1 - Source Code

Description of the bug: When running the SuperTux v0.5.1 under ReactOS x64, it starts, but as soon as we try to start the levels, the software have an application error and must be closed. Weirdly, our GCC x64 (handmade with the patch) make it work (stable, with little FPS drop, but do work) As in ReactOS x64 compiled with GCC.

Screenshot: Bug image MSVCx64.png No bug image GCCx64.png

Log:
GCC: Supertux-GCCx64.log In this case, you must resize the window before start playing, because if you don't, you have some unwind little asserts, because the game is not happy with our 800x600 standard resolution.
MSVC: Supertux-MSVCx64.txt Even resizing the GUI, the software hangs, and it's not stoppable. It stays in a limbo forever, I can't kill it under the taskmgr and neither de debugger does it.