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Flair 7.6.4 — XY Axes Swapped in VP Output (Regression Bug)

Summary

A regression introduced in Flair 7.6.4 swaps the X and Y axes in Flair's FreeD/OSC/50Hz XYZ tracking data output. The virtual camera in Unreal Engine moves left/right when the robot moves forward/back, and vice versa. The robot move itself is correct (the robot moves in the right direction) — only the tracking data output is wrong. The fix is to downgrade to Flair 7.6.3 or earlier, or to wait for an updated release from MRMC. This is a confirmed open bug as of the community reports.

Symptoms

  • Virtual camera in Unreal moves in wrong direction when robot translates.
  • Camera moves left/right (X axis in UE) when robot should be moving forward/back (Y axis).
  • Camera moves forward/back in UE when robot moves left/right.
  • Robot physically moves in the correct direction, but the virtual camera is transposed.
  • Issue appeared immediately after updating to Flair 7.6.4.
  • Downgrading Flair version resolves the issue.

Community Guidance

[OPEN — UNRESOLVED] Regression in Flair 7.6.4 — Downgrade to 7.6.3

Community — 2023

This is a confirmed regression in Flair 7.6.4 affecting the virtual production tracking data output. The X and Y positional axes in FreeD/OSC/50Hz XYZ output are swapped compared to the previous version.

Workaround: downgrade to Flair 7.6.3 or earlier.

To downgrade: 1. Restore your Flair folder backup from before the 7.6.4 update. 2. If no backup exists, contact MRMC support to obtain the 7.6.3 installer. 3. Always back up before updating — this regression demonstrates why.

Report this bug to MRMC: gordon@mrmoco.com / support@mrmoco.com with your Flair version and a description of the axis swap.

confidence_score: 0.88

Official Documentation

MRMC Support Email