[propbeanie]

SH4 and JSGME are both old Windows XP apps, NOT authorized by the post-Vista 'modern' Windows OS. As such, when you attempt to apply a modification to anything in the Program Files folders, which are "protected" by Windows, Windows itself will see the changes as "un-authorized" and roll them back. The other games you mention might well be considered 'modern' and be "authorized" to make changes. Most everything DirectX v9.0c, which includes the Silent Hunter series, is NOT. The mod is "activated", but the altered by Windows, and disabled, oftentimes to the point on now causing CTDs. There is nothing you can do about this, other than install Silent Hunter into a non-protected folder that Windows will not interfere with.