Sequencer Event Track crash when modifying an array contained in a struct

Development Cinematics & Media
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1

Reproducible in clean project.

Steps

  • Create blueprint struct containing an Array of Actors
  • Create a Level Sequence
  • Add an Event Track to the newly created Level Sequence
  • Add a new key
  • Edit the key to use your new struct
  • Press the + symbol to add an item to the array

It should crash due to:

Assertion failed: 0 [File:Engine\Engine\Source\Runtime\Core\Public\Serialization/MemoryArchive.h] [Line: 56]

Here is the crash log for the clean project.

Let me know if there is anything else you need.

2

Thanks for the report. We’re tracking this issue here:

3

Same here, my specific crash happens when I put a SoundWave as a parameter of my struct and I pick which one I want in my event. After selecting it, crash 100%.

4

Yeah same here! I get the same problema when selecting a montage asset from the content browser in the event track

5

Hi there,

Still happening in 4.17.2. With the next structure defined in Blueprint, after setting the values in the sequencer, if you try to modify the key created before, the editor

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crashes.

6

Similar issue here: Calling event struct in sequencer. Struct contains an Audio event from Wwise. Playing game crashes when approaching that section of the sequencer. Attempting to open the properties of that event keyframe in sequencer causes a crash.