Reproduction steps:
1. Open the attached “IN-92521” project
2. In the Project window, click on either the “PSD_Star” or the “PSB_Star” item
3. If selected “PSD_Star”, at the top of the Inspector window, select "UnityEditor.U2D.PSD.PSDImporter" as the Importer
4. Enter Play mode, while the PSD Importer Inspector is open
5. Observe the Console window

Expected result: No exceptions or errors are shown
Actual result: A “NulleRefernceException: Object reference not set to an instance of an object” exception is thrown

Reproducible with: 8.0.5 (2022.3.41f1, 2022.3.55f1), 9.0.3 (6000.0.33f1), 10.0.0 (6000.1.0b1)
Not reproducible: 6.0.9 (2021.3.47f1), 7.0.0-pre.4 (2022.2.0a5), 8.0.5 (2022.3.40f1)

Reproducible on: Windows 11 (24H2)
Not reproducible on: No other environments tested

Note: Regression is between Editor versions 2022.3.40f1 and 2022.3.41f1