Troubleshooting | "Error loading plugin 'init.lua'" appears when opening Designer 9.4 or earlier

Updated at March 24th, 2026

Affected Products

Hardware Model/Series All
Software QDS 9.4 or earlier

Problem | Symptoms

When opening Designer v9.4 or earlier, Designer pops up and error message “Error loading plugin ‘init.lua’” and some plugins appear not to load.


Causes | Verification

The “mDNS plugin” makes use of the Lua modules feature of Designer. The Lua modules feature was introduced in Designer 9.5. Previous versions are unaware of Lua modules ands if the mDNS plugin is installed and a version of Designer older than v9.5 is opened, They will generate an error as and processing of further plugins stops resulting in some installed plugins not showing up.


Solution | Workaround

To use Designer 9.4 or earlier without error, remove any and all instances of the mDNS plugin from the machine.