Hi Lee,

Why don't you use the built-in .xdata recorder in the tracked camera compounds?

More on it here under the Input recording paragraphs: https://aximmetry.com/learn/virtual-production-workflow/preparation-of-the-production-environment-phase-i/setting-up-inputs-outputs-for-virtual-production/video/recording/how-to-record-camera-tracking-data/

Otherwise, the problem with your setup is that the Data Stream module is not being executed. You could use a Force Execution module to make it work:

If you build this into an active production Flow Editor logic and the Camera Tracking module is connected to an active output, then you can probably remove the Force Execution module.
More on module execution here:
https://aximmetry.com/learn/virtual-production-workflow/preparation-of-the-production-environment-phase-i/scripting-in-aximmetry/flow-editor/module/#module-execution
The Data Stream module is probably the only output module that doesn't work as an active module when you click on record.

Warmest regards,