--- a/src/saveload.cpp	Mon May 05 21:09:03 2008 +0000
+++ b/src/saveload.cpp	Mon May 05 21:54:05 2008 +0000
@@ -1114,7 +1114,7 @@
 
 static void WriteNoComp(uint size)
 {
-	fwrite(_sl.buf, 1, size, _sl.fh);
+	if (fwrite(_sl.buf, 1, size, _sl.fh) != size) SlError(STR_GAME_SAVELOAD_ERROR_FILE_NOT_WRITEABLE);
 }
 
 static bool InitNoComp()