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1. Be sure to install all 3rd party software that comes with the installer. 
2. If this doesn't work, make sure that you have the latest video drivers installed.
3. Make sure that your video card supports shader model 3 or higher. This is usually the case with newer dedicated video cards. Integrated video cards might not work.
4. See if the problem happens with both Unity and Ogre. If Ogre works in OpenGL mode, it might be a DirectX problem.
5. In rare cases, a virus scanner may block the Unity executable. Refer to the documentation of your virus scanner to see if the executable has been quarantined or deleted. Update your virus definitions.

Why don't I see Brad and Rachel, even though a renderer (Unity, Ogre) is running?

Is SmartBody running? You can see this by looking at the SmartBody row in the Launcher. If it's green, it is running, if it is orange, its status is unknown (usually, the Launcher tried running the component, but did not get confirmation it is actually up and running), and if the color is neutral it means it is not running. Make For Unity, SmartBody is a linked in library, so it should load automatically. For Ogre, make sure the renderer is up and running before you start SmartBody. Please also make sure the renderer is completely up and running before you start SmartBody. If you use the Run All button, you might have to kill SmartBody and launch it manually.

Why don't I hear Brad and Rachel?

See if Brad is moving his the characters are moving their lips. If so, make sure your volume is not all the way down, that it is not muted, and that you know where sound should come from (i.e., desktop speakers, or a head phone that has just been plugged in). If Brad is not moving his lips, make sure the Text To Speech module is running. If it is, look in its console window for any error messages that might give you an idea of what is going wrong. The TTS executable is called "MsSpeechRelay.exe". 

Why did Brad and Rachel stop reacting to me?

It might not have the correct answer for you, especially if you have tried asking the same question a couple of times. There might also be a delay in some of the modules. Try waiting a minute after trying again. If there is no response at all, make sure all modules are still green in the Launcher. If a module that is checked is neutral, try launching it. If one of the checked rows is orange, the module might have crashed. Find the associated window or process and kill quit it manually, then restart that module. If all checked rows are green, try to restart SmartBody, the NVBG and the NPCEditor. If this doesn't help, kill quit all modules and restart them. As a last resort, try rebooting your computer and start all modules. If this still doesn't resolve the issue, ask in the Google Group.

SmartBody

For all SmartBody related questions, see the dedicated SmartBody website. 

NPCEditor

I am asking my character a predefined question, but he doesn't respond. How can I solve that?

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