A lot of people experience CTDs because of inadequate memory. It's not about how much memory your system has or that you are running Windows 7 64-bit. SH4 is an old program, first released in 2007. The code doesn't know that the limit of available RAM has been extended beyond 2GB, so that's all it asks for. And 2GB is at times not enough, especially if you are running mods. So yu have to patch the SH4 cade to request more than 2GB. There are two ways to do this: Large Address Aware and "4GB Patch for SH4"
LAA can be found here:
http://www.techpowerup.com/forums/sh...d.php?t=112556
4GB Patch for SH4 can be found here:
http://file7file.com/33104039/4gb+patch+for+sh4+7z.html
Either of these may solve your CTD problem.