---
title: "NavVis M6 Warning Messages"
slug: "warning-messages"
description: "Collision warning alerts the operator when the camera head nears a wall or door frame, and is active only during mapping. Critical errors raise a stop-sign dialog: stop mapping, start a new dataset, restart or cold-reboot."
updated: 2025-06-27T11:03:34Z
published: 2025-06-27T11:03:34Z
canonical: "knowledge.navvis.com/warning-messages"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://knowledge.navvis.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Warning Messages

## Collision Warning

Beware of obstacles at the height of the camera head. If the camera head comes close to a wall, door frame, or other obstacle, the internal collision detection alerts the operator:

![](https://cdn.document360.io/bf174766-fa1a-4fe1-a4d7-b1db1e7cb996/Images/Documentation/warning-messages-image-q2klasm8.png)

> [!NOTE]
> **Note:** Always be careful when carrying or moving the device. The collision warning is only active during mapping and does not guarantee that every potential collision can be detected, for example when going through doors or narrow environments.

## Critical Errors

If a sensor or critical software component fails, an alert dialog with a stop sign appears. Errors *cannot* be resolved by the operator while mapping; the map is most likely broken. To address the issue, try these steps:

- Stop mapping and create a new dataset before continuing.
- **First aid**: If the alert dialog re-appears after stopping and restarting mapping, try either to *restart the mapping application* or to *cold-reboot the system*. If the stop sign still appears, contact NavVis technical support.
- **Diagnosis**:
  - Go to the system settings and tap "Show Log" to view live logs. This window shows the system state in more detail.
  - Take a screenshot of the system status and send it to NavVis technical support along with the [Log Files](/v1/docs/log-files-2) from the affected dataset.