Hi! I’m Charlotte, here to help you with your VideoPad update or installation issue. To get started, could you please share a bit more about your situation?

- Are you trying to install VideoPad for the first time, or is this an update to an existing version?
- When you say it won’t update or install, do you see any error messages or does the process just not start or finish?
- Have you tried any steps so far, like restarting your computer or running the installer again?

This info will help me guide you through the best next steps. Meanwhile, I’ll prepare some common fixes for update/install problems on Windows 10 with VideoPad.

Trying to update, but it said an application file could not be written

Thanks for the additional info! The error message "an application file could not be written" usually means the installer can’t modify some files because they’re currently in use, or there are permission issues.

Let’s try the following steps on your Windows 10 WebKit device to fix this:

1. Close VideoPad and other running apps:
Make sure VideoPad is fully closed. You can check by opening Task Manager (press Ctrl+Shift+Esc), look under the Processes tab for anything related to VideoPad or NCH, and end those processes if found.

2. Run the installer as administrator:
Right-click the VideoPad update installer and select "Run as administrator." This gives it enough permission to write all necessary files.

3. Restart your computer:
Sometimes a restart frees up locked files so the update can proceed smoothly.

4. Temporarily disable antivirus software:
Some antivirus programs might block file writes during installation. Temporarily disable your antivirus or firewall, then run the installer again. Don’t forget to enable the protection afterward.

5. Check file permissions manually:
Navigate to where VideoPad is installed (usually under C:\Program Files\NCH Software\VideoPad) and right-click the folder. Pick Properties > Security tab and make sure your user account has full control permissions.

If after these steps the error persists, it might be worth uninstalling the existing version of VideoPad first, then reinstalling from a fresh download. I can guide you through that if needed.

Would you like to try these steps first and let me know how it goes?