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

core/cross/client.cc

Index: core/cross/client.cc
===================================================================
--- core/cross/client.cc	(revision 19521)
+++ core/cross/client.cc	(working copy)
@@ -116,11 +116,8 @@
 // Assigns a Renderer to the Client, and also assigns the Client
 // to the Renderer and sets up the default render graph
 void Client::Init() {
-  if (!renderer_.IsAvailable()) {
-    // Don't allow packs to be created.
-    object_manager_->DisallowPackCreation();
+  if (!renderer_.IsAvailable())
     return;
-  }
 
   // Create the root node for the scenegraph.  Note that the root lives
   // outside of a pack object.  The root's lifetime is directly bound to that
@@ -144,6 +141,15 @@
   counter_manager_.ClearAllCallbacks();
 }
 
+Pack* Client::CreatePack() {
+  if (!renderer_.IsAvailable()) {
+    O3D_ERROR(service_locator_) << "Pack creation not allowed";

[gman, 2009/06/30 21:32:11]

How about changing this message to "No Renderer available, Pack creation not
allowed." or something like that? People get the message now and they have no
idea what went wrong or where to start looking.

+    return NULL;
+  }
+
+  return object_manager_->CreatePack();
+}
+
 // Tick Methods ----------------------------------------------------------------
 
 void Client::SetTickCallback(