Some logging of texture overrides- also, only unregister if it's an actual ModTextureStatic, not if it's a subclass.

client/cpw/mods/fml/client/FMLClientHandler.java

@@ -741,6 +741,7 @@ public class FMLClientHandler implements IFMLSidedHandler
         for (OverrideInfo animationOverride : animationSet) {
             renderer.func_1066_a(animationOverride.textureFX);
             addedTextureFX.add(animationOverride.textureFX);
+            FMLCommonHandler.instance().getFMLLogger().finer(String.format("Registered texture override %d (%d) on %s (%d)", animationOverride.index, animationOverride.textureFX.field_1126_b, animationOverride.textureFX.getClass().getSimpleName(), animationOverride.textureFX.field_1128_f));
         }
         
         for (String fileToOverride : overrideInfo.keySet()) {
@@ -751,6 +752,7 @@ public class FMLClientHandler implements IFMLSidedHandler
                     ModTextureStatic mts=new ModTextureStatic(override.index, 1, override.texture, image);
                     renderer.func_1066_a(mts);
                     addedTextureFX.add(mts);
+                    FMLCommonHandler.instance().getFMLLogger().finer(String.format("Registered texture override %d (%d) on %s (%d)", override.index, mts.field_1126_b, override.texture, mts.field_1128_f));
                 }
                 catch (IOException e)
                 {

client/net/minecraft/src/ModTextureStatic.java

@@ -155,4 +155,17 @@ public class ModTextureStatic extends TextureFX
 
         return tmp;
     }
+    
+    /* (non-Javadoc)
+     * @see net.minecraft.src.TextureFX#unregister(net.minecraft.src.RenderEngine)
+     */
+    @Override
+    public boolean unregister(RenderEngine engine)
+    {
+        if (this.getClass()==ModTextureStatic.class) {
+            return super.unregister(engine);
+        } else {
+            return false;
+        }
+    }
 }