Software⏱️ 3 min read📅 2026-06-19

How to Fix: SmartGit/Hg launch error

SmartGit/Hg launch error fix: Check for missing Eclipse SWT library.

Quick Answer: The issue is caused by a missing Eclipse SWT library. Try adding the SWT library to your Java classpath or using a different version of SmartGit/Hg that includes this library.

📋 Table of Contents

  1. 🔍 Why This Happens
  2. 🛠️ Step-by-Step Verified Fixes
  3. ✨ Wrapping Up

SmartGit/Hg is a popular version control system, but it has been reported to launch with an error when run from a portable drive. This error occurs due to the program's reliance on Eclipse SWT widgets, which are not properly loaded. As a result, users may encounter issues such as missing classes and NoClassDefFoundError exceptions.

This issue can be frustrating for developers who rely on SmartGit/Hg for their projects. However, with the right troubleshooting steps, it is possible to resolve this error and get the program running smoothly.

🔍 Why This Happens

  • The primary cause of this error is the lack of a native SWT library on the portable drive. Since Java-based versions of SmartGit/Hg do not require native libraries, this issue can occur when using the generic version that relies solely on Java.
  • Another possible cause is a corrupted or missing Eclipse SWT jar file in the program's classpath.

🛠️ Step-by-Step Verified Fixes

Updating the Program to Use a Native SWT Library

  1. Step 1: Download the native SWT library for your operating system from the official Eclipse website.
  2. Step 2: Extract the downloaded archive to a folder on your portable drive, such as C:\Program Files\SmartGit\swt.
  3. Step 3: Update the SmartGit/Hg program's classpath to include the path to the native SWT library. This can be done by adding the following line of code to the program's launch configuration file (usually named 'launch.conf'): -Dorg.eclipse.swt.widgets.Display=org.eclipse.swt.windows.X
  4. Step 4: Restart the SmartGit/Hg program and verify that it launches without errors.

Using a Different Version of SmartGit/Hg

  1. Step 1: Try using a different version of SmartGit/Hg that does not rely on native SWT libraries, such as the Java-based version.
  2. Step 2: Download and install the Java-based version from the official website or a reliable repository.
  3. Step 3: Launch the program and verify that it runs without errors.

✨ Wrapping Up

By following these troubleshooting steps, users should be able to resolve the SmartGit/Hg launch error and get their program running smoothly. If the issue persists, further investigation may be necessary to identify the root cause and implement a permanent fix.

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