This section addresses common problems that can arise when using Unity. Each platform is dealt with separately below.
Deferred rendering is disabled because materials are not displayed correctly for Geforce 7300GT on OX 10.6.4; This happens because of buggy video drivers.
You need to apply Windows hotfix #976038.
In the MonoDevelop preferences, go to the Visual Style section, and uncheck “Load welcome page on startup”.
This happens when Visual Studio reports that it failed to open your script. The most common cause for this is an external plugin (such as Resharper) displaying a dialog at startup, requesting input from the user. This causes Visual Studio to report that it failed to open.
This may occur if your video card drivers are not up to date. Make sure you have the latest official drivers from your card vendor.
An object’s Renderer must have Receive Shadows enabled for shadows to be rendered onto it. Also, an object must have Cast Shadows enabled in order to cast shadows on other objects (both are on by default).
Only opaque objects cast and receive shadows. This means that objects using the built-in Transparent or Particle shaders will not cast shadows. In most cases it is possible to use Transparent Cutout shaders for objects like fences, vegetation, etc. If you use custom written Shaders, they have to be pixel-lit and use the Geometry render queue. Objects using VertexLit shaders do not receive shadows but are able to cast them.
Only Pixel lights cast shadows. If you want to make sure that a light always casts shadows no matter how many other lights are in the scene, then you can set it to Force Pixel render mode (see the Light reference page).
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