# EM_VERSION_AHEAD

The run's execution settings are newer than this engine can read.

## What happened

This run's execution settings were saved by a newer version of Forge than this engine can read. Before a run starts, the engine settles every setting it depends on, and a setting that cannot be settled ends the run with this code without testing anything. The engine's own text is in `detail.reason`.

## What to do

Reset the execution settings to their defaults, then set them again.

## Example

```json
{
  "status": "failed",
  "error": {
    "code": "EM_VERSION_AHEAD",
    "message": "The engine refused this run's settings before it started.",
    "detail": {}
  }
}
```

The reply also carries `detail.reason`, left out of this sample.