Changed way Packs cannot be created if there is no Renderer.

core/cross/pack.cc

 /*
  * Copyright 2009, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 145 matching lines @@
   return CreateTextureFromFile(uri,
                                filepath,
                                file_type,
                                generate_mipmaps);
 }
 
 // Creates a Texture object from a bitmap in the current render context format.
 Texture* Pack::CreateTextureFromBitmap(Bitmap *bitmap, const String& uri) {
   DCHECK(bitmap);
 
+  if (!renderer_) {
+    O3D_ERROR(service_locator()) << "No Render Device Available";
+    return NULL;
+  }
+
   if (bitmap->width() > Texture::MAX_DIMENSION ||
       bitmap->height() > Texture::MAX_DIMENSION) {
     O3D_ERROR(service_locator())
         << "Texture (uri='" << uri
         << "', size="  << bitmap->width() << "x" << bitmap->height()
         << ", mips=" << bitmap->num_mipmaps()<< ") is larger than the "
         << "maximum texture size which is (" << Texture::MAX_DIMENSION
         << "x" << Texture::MAX_DIMENSION << ")";
     return NULL;
   }
@@ skipping 207 matching lines @@
 
 bool Pack::UnregisterObject(ObjectBase *object) {
   ObjectSet::iterator find(owned_objects_.find(ObjectBase::Ref(object)));
   if (find == owned_objects_.end())
     return false;
 
   owned_objects_.erase(find);
   return true;
 }
 }  // namespace o3d