diff --git a/src/Scenery/FGTileLoader.cxx b/src/Scenery/FGTileLoader.cxx
index 8f04c78c8..661833e28 100644
--- a/src/Scenery/FGTileLoader.cxx
+++ b/src/Scenery/FGTileLoader.cxx
@@ -89,6 +89,7 @@ FGTileLoader::add( FGTileEntry* tile )
     tile_load_queue.push( tile );
 }
 
+#ifdef WISH_PLIB_WAS_THREADED // but it isn't
 /**
  * 
  */
@@ -97,6 +98,7 @@ FGTileLoader::remove( FGTileEntry* tile )
 {
     tile_free_queue.push( tile );
 }
+#endif
 
 /**
  * 
@@ -156,6 +158,7 @@ FGTileLoader::LoaderThread::run()
 
   	FGTileMgr::ready_to_attach( tile );
 
+#ifdef WISH_PLIB_WAS_THREADED // but it isn't
 	// Handle and pending removals
 	while ( !loader->tile_free_queue.empty() ) {
 	    cout << "freeing next tile ..." << endl;
@@ -164,6 +167,8 @@ FGTileLoader::LoaderThread::run()
 	    tile->free_tile();
 	    delete tile;
 	}
+#endif
+
     }
     pthread_cleanup_pop(1);
 }
diff --git a/src/Scenery/FGTileLoader.hxx b/src/Scenery/FGTileLoader.hxx
index 258232a52..f8d1ba03b 100644
--- a/src/Scenery/FGTileLoader.hxx
+++ b/src/Scenery/FGTileLoader.hxx
@@ -60,11 +60,13 @@ public:
      */
     void add( FGTileEntry* tile );
 
+#ifdef WISH_PLIB_WAS_THREADED // but it isn't
     /**
      * Remove a tile from memory.
      * @param tile The tile to be removed from memory.
      */
     void remove( FGTileEntry* tile );
+#endif
 
     /**
      * The tile loader thread will only load one tile per call to the
@@ -89,10 +91,10 @@ private:
      * FIFO queue of tiles to load from data files.
      */
     SGBlockingQueue< FGTileEntry * > tile_load_queue;
-    SGBlockingQueue< FGTileEntry * > tile_free_queue;
+    // SGBlockingQueue< FGTileEntry * > tile_free_queue;
 #else
     queue< FGTileEntry * > tile_load_queue;
-    queue< FGTileEntry * > tile_free_queue;
+    // queue< FGTileEntry * > tile_free_queue;
 #endif
 
     /**
diff --git a/src/Scenery/newcache.cxx b/src/Scenery/newcache.cxx
index c7e59195e..841fb4bac 100644
--- a/src/Scenery/newcache.cxx
+++ b/src/Scenery/newcache.cxx
@@ -64,9 +64,10 @@ void FGNewCache::entry_free( long cache_index ) {
     SG_LOG( SG_TERRAIN, SG_DEBUG, "FREEING CACHE ENTRY = " << cache_index );
     FGTileEntry *tile = tile_cache[cache_index];
     tile->disconnect_ssg_nodes();
-    tile->sched_removal();
 
-#if 0
+#ifdef WISH_PLIB_WAS_THREADED
+    tile->sched_removal();
+#else // plib isn't threaded so we always go here
     tile->free_tile();
     delete tile;
 #endif
diff --git a/src/Scenery/tileentry.cxx b/src/Scenery/tileentry.cxx
index 4bc931ae1..5ba0900d8 100644
--- a/src/Scenery/tileentry.cxx
+++ b/src/Scenery/tileentry.cxx
@@ -105,11 +105,15 @@ static void my_remove_branch( ssgBranch * branch ) {
 }
 
 
+#ifdef WISH_PLIB_WAS_THREADED // but it isn't
+
 // Schedule tile to be freed/removed
 void FGTileEntry::sched_removal() {
     global_tile_mgr.ready_to_delete( this );
 }
 
+#endif
+
 
 // Clean up the memory used by this tile and delete the arrays used by
 // ssg as well as the whole ssg branch
diff --git a/src/Scenery/tileentry.hxx b/src/Scenery/tileentry.hxx
index 5199f8f92..d1fdb93e2 100644
--- a/src/Scenery/tileentry.hxx
+++ b/src/Scenery/tileentry.hxx
@@ -177,8 +177,10 @@ public:
     // Destructor
     ~FGTileEntry();
 
+#ifdef WISH_PLIB_WAS_THREADED // but it isn't
     // Schedule tile to be freed/removed
     void sched_removal();
+#endif
 
     // Clean up the memory used by this tile and delete the arrays
     // used by ssg as well as the whole ssg branch
diff --git a/src/Scenery/tilemgr.hxx b/src/Scenery/tilemgr.hxx
index 0dfc968ed..b4ae8ac1d 100644
--- a/src/Scenery/tilemgr.hxx
+++ b/src/Scenery/tilemgr.hxx
@@ -143,10 +143,12 @@ public:
      */
     static void ready_to_attach( FGTileEntry *t ) { attach_queue.push( t ); }
 
+#ifdef WISH_PLIB_WAS_THREADED // but it isn't
     /**
      * Tile is detatched from scene graph and is ready to delete
      */
     inline void ready_to_delete( FGTileEntry *t ) { loader.remove( t ); }
+#endif
 
     /**
      * Add a pending model to the 'deferred model load' queue