FPSTutorial error ?

Unity Engine
1

Greetings,

in the third .pdf of the tutorial, page 9, they tell to drag a script called DrawRockets.js to a gameObject GUI Texture. But it causes a crash (Unity 2.6.1) with the following error messages :

NullReferenceException: Object reference not set to an instanceof an object
DrawRockets.Start () (at Assets\Misc Scripts\DrawRockets.js:14)

IsD3D9DeviceLost() || g_D3DInsideScene

As I said, Unity go crazy. Problem known ?

2

The action of dragging the script is causing the crash.

Putting lines 18 to 20 (function OnGUI) prevents to crash.

Reverting them to normal lines codes after having dropped the DrawRockets.js don’t make Unity crash.