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Why does my browser show an unresponsive script warning while loading the Map Designer?



When loading the Map Designer on my PRTG installation with more than 5,000 sensors, my browser (Firefox) shows a dialog box:

Warning message
Click to enlarge.

Warning: Unresponsive script

A script on this page may be busy, or it may have stopped responding. You can stop the script now, or you can continue to see if the script will complete.

What does that mean?

designer error map-designer maps prtg

Created on May 5, 2011 1:40:05 PM by  Daniel Zobel [Product Manager]

Last change on Jun 19, 2023 3:25:58 PM by  Fruzsina Ébelle [Paessler Support]

1 Reply

Accepted Answer



This article applies as of PRTG 22

Unresponsive script in Map Designer

When you open the Map Designer feature in PRTG, the entire device tree is loaded to ensure you can easily use drag-and-drop with all of your monitoring objects.

Preloading your device tree might take a few seconds at first, with the benefit of faster operation later. However, in very large installations, your browser might show the warning displayed above, depending on your configuration, client, and browser. We have seen this in Firefox with installations that contain 5,000 sensors and more.

Confirm the alert with Continue to wait for it to finish. After successful startup, you can use the map designer as usual.

Created on May 5, 2011 1:52:33 PM by  Daniel Zobel [Product Manager]

Last change on Jan 2, 2023 2:23:00 PM by  Brandy Greger [Paessler Support]

Disclaimer: The information in the Paessler Knowledge Base comes without warranty of any kind. Use at your own risk. Before applying any instructions please exercise proper system administrator housekeeping. You must make sure that a proper backup of all your data is available.