ID 486035 - Exporting Sequences with a soft effect as the bottom active track error with a unhelpful error message saying 'NoneType' object has no attribute 'getJumpName'

Problem summary
Exporting Sequences with a soft effect as the bottom active track error with a unhelpful error message saying 'NoneType' object has no attribute 'getJumpName'

Customer reported version
hiero

Customer reported platform
-

Steps to reproduce

1) Open Nuke Studio/Hiero and import any footage

2) Add the footage to the timeline and disable the video track

3) Create a new Video Track, and add any soft effect to it, like a Transform

4) Create a new Video track, and add the footage to it:

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5) Right click the sequence> Export.. and use the default ​Log10 Cineon DPX preset, making sure all tracks is enable for the export

6) Press Export, it will now fail to export. Checking the log its says:

Task 'TranscodeExporter' reported errors:

Error starting transcode

'NoneType' object has no attribute 'getJumpName'

Expected behaviour
For the error message to explain why the sequence failed to export
Or to be able to export all tracks when the bottom most track is a soft effect track

Actual behaviour
The export fails with the error message: 'NoneType' object has no attribute 'getJumpName'

​

Workaround
Unknown. 

Reproduced by support
This bug has been reproduced in:
Nuke Studio 13.0v4 - Windows 10, CentOS 7.5, macOS Big Sur
Nuke Studio 11.0v1 - Windows 10
Nuke Studio 10.5v1 - Windows 10, CentOS 7.5 - regression

Unable to reproduce bug in:
Nuke Studio 10.0v6 - Windows 10, CentOS 7.5

Earliest version tested
Nuke Studio 10.0v6 - This issue doesn't appear in this version and has regressed