Release note for RESC-177.

Opentrons · Mar 12, 2024 · 64d9d8e · 64d9d8e
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+## Opentrons Robot Software Changes in 7.2.1
+
+Welcome to the v7.2.1 release of the Opentrons robot software!
+
+### Bug Fixes
+
+* Fixed an OT-2 issue where tip length calibrations created before v4.1.0 would cause a "missing calibration data" error that you could only resolve by resetting calibration.
+
+---
+
 ## Opentrons Robot Software Changes in 7.2.0
 
 Welcome to the v7.2.0 release of the Opentrons robot software!