Yup, and as you already know by now, even complete reinstallation of the game is not a disaster. Tell you what I finally did, because I actually enjoy tweaking to potential destruction. Immediately after making a clean installation I copied my entire Silent Hunter Wolves of the Pacific directory into a new one: SH4 Pristeen. Then I write protected it. That way when corrupted files rear their ugly heads, it's a simple matter of copy and paste to fix it!