---
title: "QT Crash in Lasernet Developer 9 and 10 - Lasernet Developer"
slug: "qt-crash-in-lasernet-developer-9-and-10"
description: "Sometimes when opening Lasernet Developer, the Tool Bar on the top and the Server/Object Menu on the left may disappear. Read the article to fix it."
updated: 2026-03-05T13:15:47Z
published: 2026-03-05T13:15:47Z
canonical: "kb.lasernetgroup.com/qt-crash-in-lasernet-developer-9-and-10"
---

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

# QT Crash in Lasernet Developer 9 and 10

**Applies to:** Lasernet 9, Lasernet Core 10

Sometimes, when opening Lasernet Developer, the tool bar on the top and the **Server**/**Object** menu on the left may disappear.

![](https://cdn.document360.io/c831ef63-c6b3-48ee-b443-3e33644e4e2e/Images/Documentation/image-6XHY4WXR.png)

In order to fix this, on the menu bar, click **View** > **Reset Layout**.

![](https://cdn.document360.io/c831ef63-c6b3-48ee-b443-3e33644e4e2e/Images/Documentation/image-II6NZP47.png)

This will repopulate the tool bar on the top and the **Server**/**Object** menu on the left.

![](https://cdn.document360.io/c831ef63-c6b3-48ee-b443-3e33644e4e2e/Images/Documentation/image-PNVT7R75.png)