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Fixed in 1.3.0

Fixed in 1.2.13



Found in [Package]

1.0.0, 1.3.0-preview.6

Issue ID




[Timeline] ArgumentException in SignalReceiver when all Signals are set to None

Package: Timeline


In SignalReceiver component with 2 or more Reactions, "ArgumentException: SignalAsset already used." error is thrown when the last Signal slot is set to 'None'.

How to reproduce:
1. Open "SampleScene" from project ""
2. In Hierarchy select "SignalReceiver"
3. In Inspector set both Signal selections to 'None'
4. Inspect Console

Expected result: No errors in Console
Actual result: ArgumentException error in Console

Reproducible with: 2019.2.18f1(1.1.0), 2019.3.0f5(1.2.10), 2020.1.0a19(1.3.0-preview.6)
Could not test with: 2017.4 and 2018.4 - Signals not supported

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