# 内容丢失

When distributing a map or mod, care must be taken to ensure that any custom content (sounds, materials, textures, models, etc.) is also distributed, or else players will have an unintended experience.

* Missing materials/textures show up as a black-and-magenta checkerboard.
* Missing models show up as red 3D text saying "Error" (in Portal 2 the 3D Error text is a light blue)
* Missing sounds are absent (in Portal 2, a missing sound is indicated by [Dr. Kleiner](https://developer.valvesoftware.com/wiki/Dr._Isaac_Kleiner) saying "Oh, fiddlesticks. What now?")
* Missing particles (at least in Portal 2 and Team Fortress 2) appear as a spray of red X's.

If the missing contents shipped with the Source SDK, and are not custom creations, it is likely a problem with your game configuration. See [Incorrect Hammer configuration](https://developer.valvesoftware.com/wiki/Incorrect_Hammer_configuration) for more information.

### 常见问题

One very common problem is when users see a black-and-magenta checkerboard "sheen" or reflection on surfaces. This is caused by a missing texture, generally due to missing [cubemaps](https://developer.valvesoftware.com/wiki/Cubemaps), which must be "built" in-game prior to distributing the map.

![An example of a missing textures checkerboard.](https://2905920047-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LPXG6BIVWwbrvVSOiBw%2F-M2MphyYbStBjc60ZvDp%2F-M2Mr14_Zu2mz2UmdrAl%2FMissing_textures_example.png?alt=media\&token=6055fb53-8d9a-47cf-8db2-acaeab6e1137)

![Red "Errors" appear behind the camera on the Team Fortress 2 map "background01.bsp".](https://2905920047-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LPXG6BIVWwbrvVSOiBw%2F-M2MphyYbStBjc60ZvDp%2F-M2Mr4oKGsiR8CvO6vJO%2FERROR_model_example_on_background01.jpg?alt=media\&token=e1839f8b-f4d3-48c9-8f78-5d0158ec35c9)

{% hint style="info" %}
Source: <https://developer.valvesoftware.com/wiki/Missing_content>
{% endhint %}