> For the complete documentation index, see [llms.txt](https://help.movin3d.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.movin3d.com/movin-tracin-stage-en/reference/troubleshooting.md).

# Troubleshooting

| What you see                                                          | What to do                                                                                                                                                                                              |
| --------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| A sensor status indicator is red, or shows **Disconnected**           | Check the sensor power and network cable. In **Connect sensors** (Calibration stage), select **Detect sensors**.                                                                                        |
| A sensor shows **Standby** or **No data**                             | The sensor is connected but not streaming. In Step 1 of the wizard, select **Reconnect**. Otherwise, if the pipeline is stopped select **Start preview**; if it is already running, select **Restart**. |
| The 3D scene appears flat (all points on the floor)                   | This may indicate a problem with the sensor. Contact your MOVIN support team.                                                                                                                           |
| Sensors never reach **PTP synced**                                    | Time synchronization cannot be established. This is a network or hardware issue. Contact your MOVIN support team.                                                                                       |
| The view remains empty 5–15 seconds after starting                    | This is a normal warm-up period. If the view stays empty, check the sensor connections.                                                                                                                 |
| Calibration **Confirm** is disabled                                   | Continue collecting until every sensor is ready (Step 2), or wait for World solve to finish (Step 5).                                                                                                   |
| A residual warning appears after refining                             | Move the wand through several additional positions (**Capture more**), then run the refinement again. If the warning persists, contact your MOVIN support team.                                         |
| You cannot edit the calibration, and selecting it prompts you to stop | Calibration locks once the pipeline is running. Confirm the stop, edit the calibration, then go live again.                                                                                             |
| Background learning does not complete                                 | The pipeline must be running and the stage must be empty. Select **Re-learn**.                                                                                                                          |
| The console is not receiving OSC data                                 | In **OSC output**, confirm the **Target IP** and **Target port**, then select **Send test cue**.                                                                                                        |
| The scene is misaligned (doubled walls)                               | A sensor may have moved, or the active calibration may no longer be valid. Stop the pipeline first, then recalibrate.                                                                                   |
| A **"Backend unreachable"** banner appears                            | The control service is not responding. Wait for it to reconnect. If the problem persists, contact your MOVIN support team.                                                                              |


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