Locklizard Installation Instructions & Troubleshooting

Some downloads sold by The Masonry Society are protected by Locklizard DRM and can only be opened using the Locklizard Viewer software. Protected products are clearly noted on the store page and can also be identified by a SKU beginning with LLF. These products are provided as .PDC files, which cannot be opened using any other PDF software. Please review the limitations placed on protected files before purchasing a protected download product.

Locklizard products sold by TMS provide single-user access only. Need access for multiple people? Visit these vendors for multi-user options


Help Center

See the links below for help with common issues. Contact TMS for additional help with licenses, printing, or other issues.


Locklizard Installation Walkthrough

This video shows how to install and register Locklizard Safeguard Viewer. Detailed instructions are also posted below.


Installing & Registering the Locklizard Viewer

Download Your Files

Using Your Order Emails
  • Use the links in your Completed Order email to download your documents and use the Locklizard Licensing email below to access your Locklizard license information.
    • This email is only sent after your first purchase of a protected file. If it was sent to spam or blocked, use the alternative instructions below.
Through the TMS website
  • Open your TMS Dashboard page and click the Orders tab to open the menu below.
    • Use Downloads to download any files that you have purchased from TMS.
    • Use Document License to access your Locklizard license information.

Install Locklizard

  • Make sure that you have Administrator rights to install and register software on your computer.
  • Use this link to download the Safeguard PDF Viewer installer for your operating system (use the green button).
    • Note: The instructions below apply to Windows operating systems. Additional instructions for other operating systems can be found on the download page above.
  • Run the installer by right-clicking on the program and selecting Run as administrator.

Activate Your License

  • Open your Locklizard Safeguard Viewer email or the Document License link on your TMS Dashboard page (as shown above).
  • Use the License Download link shown below to save your license file to your computer.
  • Find and open that .llv license file using Locklizard Safeguard – PDF Viewer to register the software on your device.
    • If double-clicking does not register your computer immediately, use the steps below:
      • Right click on the .llv license file
      • Click “Open with” and then “Choose another app”
      • Click on “More apps” and scroll down to select “Look for another app on this PC”
      • Navigate to the folder below and select PDCViewer64.exe
        C:\Program Files\Locklizard Safeguard PDF Viewer

  • The message below will appear to confirm your registration. You can now access any protected .pdc file that you have purchased from TMS on that device.

Troubleshooting

Opening the license file does not register your computer

If double-clicking does not register your computer immediately, use the steps below:

    • Right click on the .llv license file
    • Click “Open with” and then “Choose another app”
    • Click on “More apps” and scroll down to select “Look for another app on this PC”
    • Navigate to the folder below and select PDCViewer64.exe
      C:\Program Files\Locklizard Safeguard PDF Viewer

Error Message: No more licenses are available.

You have registered the maximum number of devices. Contact TMS if you need additional licenses for your account.

Error Message: Cannot file DLL file.

The required .dll file may be blocked by your antivirus. Uninstall the Safeguard Viewer and reinstall with your antivirus disabled or add it to your list of trusted programs.

Error Message: Error while unpacking program.

The file was corrupted during download or by your antivirus software, you don’t have Administrator rights, or are using an unsupported OS.

Error message: You don’t have access to this document – no access to document.

Your keystore may be corrupted — remove the keystore and register again. If the error persists, contact TMS to make sure you were given proper access and have the most updated file.

Error Message: Invalid license file. The license you are using does not match your computer details.

Remove the keystore and register again.

For additional errors, consult the Locklizard Knowledge Base