Run Time Error 8018: Operation Valid Only When The Port is Open.

Run Time Error 8018: Operation Valid Only When The Port is Open.

This occurs on till startup when the till is setup with a customer display unit however one is not attached. Turn off CDU in till maintenance.
    • Related Articles

    • Unexpected error; quitting

      After Agility Pro has been updated, this message may appear when opening Agility Pro on a PC that isn't logged in as an Administrator. Click Ok to the above error message. And then right mouse click on the Agility Pro icon and click on Run as ...
    • How to take a Screenshot of error messages/issues

      When raising a ticket, it is always helpful to include a screenshot of any error messages, or issues. There are a few different ways to do this: Windows Key + Shift + S Pressing these three keys at the same time will activate the Windows Snip & ...
    • Troubleshooting PaymentSense Card Terminals

      Troubleshooting Payment Sense Ingenico ICT250 INTERNET ACCESS As Card Terminals now operate over the internet this should be the first thing to check. Has the Card Terminal got internet access? This can be identified by the 3 rectangles at the top of ...
    • Email Address is not carrying a valid ending

      In the error message where it is showing a colon on the line after the email, it means when the customers details were originally imported into the system there was an Enter/Return at the end of the email address so it has added an extra line and ...
    • Path Not Found

      When you start Agility Professional there are times an error occurs Unexpected Erro:File\Path not found. This is connected with the mapped drives on the system. For many sites now the templates location is recorded directly into the registry to ...