If FBReader is hanging and becoming non-responsive after installing the latest version, you can follow these steps to troubleshoot and hopefully resolve the issue:

1. Restart Your Device
Begin by restarting your computer. This can clear any temporary files or processes that may be causing conflicts with FBReader.

2. Check for Updates
Ensure that you have the latest version of FBReader installed. Sometimes, developers release patches for bugs shortly after a major update. Check the official FBReader website for any patches or updates that might address the freezing issue - learn more.

3. Reinstall FBReader
If the problem persists, try uninstalling FBReader completely. Make sure to remove any associated configuration files if prompted. Once uninstalled, download the latest version from the official site and reinstall it - learn more.

4. Disable Background Applications
Other applications running in the background might interfere with FBReader. Close all unnecessary programs and try running FBReader again to see if it remains responsive.

5. Run as Administrator
Sometimes, certain permissions can cause software to hang. Right-click the FBReader shortcut and select "Run as administrator" to see if this resolves the issue.

6. Check Compatibility Settings
For Windows 10, compatibility settings can have an effect on application performance. Right-click the FBReader icon, go to "Properties," and then to the "Compatibility" tab. Experiment with the settings by checking "Run this program in compatibility mode for" and selecting an earlier version of Windows.

7. Look for Known Issues
Visit forums and user discussions to see if others are experiencing similar problems. The MobileRead forums can offer a wealth of information and potential fixes from other users who have faced similar issues - learn more.

8. Contact Support
If none of the above solutions work, consider reaching out for support through FBReader's official channels. They may provide specific troubleshooting steps or updates regarding known issues - learn more.

Taking these steps should help you address the hanging issue with FBReader on your system. If the problem continues, consider using an alternative e-book reader until a permanent fix is made available.