I hope I'm in the right section, if not, I apologize in advance. Having run Bootleg recently for the first time, I only get
one Crash--namely, when entering a battle, and apparently only when Yuffie is in my party. I went back to reverting to the old Yuffie model, and that didn't help. I managed to confirm it was Yuffie by swapping people in and out and not getting any problems, and testing multiple saves.
Here's my App Log. I don't know if it's just my installation, but my Crash.dmp is 255 mb.....so, unlike the crash message, I don't think I can really upload that to share.

INFO: FF7/FF8 OpenGL driver version 0.7.11b
INFO: Auto-detected version: FF7 1.02 US English
INFO: NVIDIA Corporation GeForce GTX 470/PCIe/SSE2 4.2.0
INFO: OpenGL 2.0 support detected
INFO: Using PBO
INFO: Found swap_control extension
INFO: Max texture size: 16384x16384
INFO: Number of texture units: 4
INFO: Original resolution 640x480, window size 1280x960, output resolution 1280x960, internal resolution 3840x2160
INFO: FBO extension detected, using fast scaling/postprocessing path
INFO: Shader limits: varying 124, vert uniform 4096, frag uniform 2048
INFO: FFMpeg movie player plugin loaded
INFO: FFMpeg version SVN-r25886, Copyright (c) 2000-2010 Fabrice Bellard, et al.
INFO: FF7Music helper plugin loaded
INFO: Loading external library Multi.dll
LOCK UNLOCK TEST
MATRIX INITIALIZE
INITIALIZE DD/D3D END
initializing sound...
creating dsound primary buffer
reading audio file
loading static sounds
sound initialized
set music volume: 127
set music volume: 127
Entering MAIN
Exiting MAIN
START OF CREDITS!!!
INFO: d:\squaresoft\FFVII\movies\eidoslogo.avi; h264/aac 1280x960, 15.000000 FPS, duration: 10.193000, frames: 153
set music volume trans: 127->0, step=60
END OF CREDITS!!!
Entering MAIN
set music volume: 127
Exiting MAIN
START OF MENU SYSTEM!!!
END OF MENU SYSTEM!!!
Entering MAIN
Exiting MAIN
Field Start
Field Quit
Entering MAIN
Exiting MAIN
-=-=[START OF WORLD MAP!!!]=-=-
stop_sound
cross play music: 0
set music volume trans: 127->0, step=4
set music volume: 127
cross play music: 0
set music volume trans: 127->0, step=4
set music volume: 127
stop_sound
-=-=[END OF WORLD MAP!!!]=-=-
Entering MAIN
Exiting MAIN
Entering FRAME_INITIALIZE SWIRL
Exitting FRAME_INITIALIZE SWIRL
Swirl sound_effect1
stop_sound
End of Swirl sound_effect1
Entering FRAME_QUIT SWIRL
Exitting FRAME_QUIT SWIRL
Entering MAIN
Exiting MAIN
[BATTLE] Entering FRAME_INITIALIZE
[BATTLE] Scene# 75
[BATTLE] Exitting FRAME_INITIALIZE
ANM ERROR: TOTAL ANIMATIONS 32 CURRENT ANIMATION 57
ERROR: unhandled exception
As it happens, it looks like something to do with Yuffie's animations? If anyone could decipher this for me, it'd be a great help. Of course, if there's any other information I should disclose, please let me know, as I'm still pretty new to this.