# Invalid_Library

> Error code indicating failure to initialize the font engine library.

## Definition

* **Type:** Field
* **Namespace:** [UnityEngine.TextCore.LowLevel](/engine/6000.6/script-reference/unityengine/textcore/lowlevel.md)
* **Assembly:** UnityEngine.TextCoreFontEngineModule

```csharp
Invalid_Library = 33
```