Search Issue Tracker

Fixed in 2021.1.X

Fixed in 2020.2.X



Found in




Issue ID




Impossible to add a Script to Execution Order when an Asset containing 'dll.meta' files is imported

Settings Window


How to reproduce:
1. Create a new project
2. Import any Asset listed in the note section
3. Go to Edit -> Project Settings -> Script Execution Order
4. Click the '+' button to add a Script to custom order

Expected result: a list of possible Scripts is shown
Actual result: the list isn't opened and the error is logged in the Console: 'ArgumentException: An item with the same key has already been added...'

Reproducible with: 2020.2.0a14, 2020.2.0b4, 2021.1.0a1
Not reproducible with: 2018.4.27f1, 2019.4.12f1, 2020.1.6f1, 2020.2.0a13

The issue is found to be reproducible with these Assets:
- 'Odin - Inspector and Serializer' (
- 'Peek - Editor Toolkit' Asset (
- 'DOTween Pro' (
- 'DOTween (HOTween v2)' (
- 'Rewired' (

  1. Resolution Note (fix version 2021.1):

    Fixed in 2021.1.0a1

  2. Resolution Note (fix version 2020.2):

    Fixed in 2020.2.6f1

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.