I am having the same issue now, game not been touched, simply put it worked when I last ran it couple of years back, now it tries to launch, quick tiny beep then closes.
Game convertor tool seems a mess, applies all sorts of patches. But I am definitely setting the sound card, and it still does it. What is that tool even for, just for single mod called reunion which not everyone uses?
my log is here, which indicates it is sound related as thats the last entry.
[00000000] INFO: FF7/FF8 OpenGL driver version 0.8.1b
[00000000] INFO: Auto-detected version: FF7 1.02 US English
[00000000] INFO: NVIDIA Corporation GeForce GTX 1080 Ti/PCIe/SSE2 4.5.0 NVIDIA 385.41
[00000000] INFO: OpenGL 2.0 support detected
[00000000] INFO: Using PBO
[00000000] INFO: Found swap_control extension
[00000000] INFO: Max texture size: 32768x32768
[00000000] INFO: Original resolution 640x480, window size 1400x1050, output resolution 1400x1050, internal resolution 1920x1440
[00000000] INFO: Shader limits: varying 124, vert uniform 4096, frag uniform 4096
[00000000] INFO: FFMpeg movie player plugin loaded
[00000000] INFO: FFMpeg version SVN-r25886, Copyright (c) 2000-2010 Fabrice Bellard, et al.
[00000000] INFO: FF7Music helper plugin loaded
[00000000] INFO: Loading external library Multi.dll
[00000000] LOCK UNLOCK TEST
[00000001] MATRIX INITIALIZE
[00000001] INITIALIZE DD/D3D END
[00000001] initializing sound...
ok I have some progress on debugging, it launches fine (with sound) if I directly launch from ff7.exe.
So the shut down is related to 7thheaven somehow.
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found another post on here, I had to manually go in my registry and set the hex value for my sound card to all zero's, after that the game runs via 7thheaven.