Search Issue Tracker


Fixed in 2021.3.26f1, 2022.2.21f1, 2023.1.0b18, 2023.2.0a14



Found in


Issue ID




UnityEditor.CoreModule.pdb supplied with Unity is either corrupted or its format does not fit the specification



Reproduction steps:
1. Open a new or an existing project
2. Make sure Rider 2021.1 is selected as the External Script Editor in Preferences
3. Make sure Rider is running in Internal Mode (instructions:
4. Open a new or an existing script in the project
5. Through Rider, attach the Debugger to the running Unity process

Expected result: No errors occur
Actual result: IDE error occurs with the exception: "Failed to ReadPdb from stream Index was outside the bounds of the array."

Reproducible with: Rider 3.0.3 - 3.0.6 (2021.2.0a1, 2021.2.0a17)
Not reproducible with: Rider 3.0.3 - 3.0.6 (2019.4.26f1, 2020.3.9f1, 2021.1.8f1)
Could not test with: 2018.4.35f1 (Due to the Rider package not being available on this version)

Add comment

Log in to post comment

All about bugs

View bugs we have successfully reproduced, and vote for the bugs you want to see fixed most urgently.