Minor improvements with KSF loader.

Cache version up to 196.

src/Song.cpp

@@ -41,7 +41,7 @@
  * @brief The internal version of the cache for StepMania.
  *
  * Increment this value to invalidate the current cache. */
-const int FILE_CACHE_VERSION = 195;
+const int FILE_CACHE_VERSION = 196;
 
 /** @brief How long does a song sample last by default? */
 const float DEFAULT_MUSIC_SAMPLE_LENGTH = 12.f;
@@ -866,7 +866,8 @@ void Song::ReCalculateRadarValuesAndLastSecond(bool fromCache, bool duringCache)
 		}
 	}
 
-	this->firstSecond = localFirst;
+	// Yes, for some reason we can have freaky stuff take place here.
+	this->firstSecond = (localFirst < localLast) ? localFirst : 0;
 	this->lastSecond = localLast;
 }