Animation State Machine Exception Access Violation

[cNori]

Issue description:

1. editing a state machine has chance to crash editor some times
2. after editing a state machine and entering a playmode it as a chance to crash editor

Log (2)

[ 00:06:07.523 ]: [Info] [PlayMode] Enter
[ 00:06:07.529 ]: [Warning] Failed to set animated model 'Robot (FlaxEngine.AnimatedModel; b15c6226453eea9e238869b8110dd2fb)' missing parameter 'WeaponAction'
[ 00:06:07.533 ]: [Warning] Failed to set animated model 'Robot (FlaxEngine.AnimatedModel; b15c6226453eea9e238869b8110dd2fb)' missing parameter 'WeaponAction'
[ 00:06:07.540 ]: [Warning] Failed to set animated model 'Robot (FlaxEngine.AnimatedModel; b15c6226453eea9e238869b8110dd2fb)' missing parameter 'WeaponAction'
================================================================
[ 00:06:07.540 ]: [Error] Critical error! Reason: Unhandled exception: EXCEPTION_ACCESS_VIOLATION reading address 0xc3e96908
[ 00:06:07.540 ]: [Error] Used Physical Memory: 9.1 Gb (57%)
[ 00:06:07.540 ]: [Error] Used Virtual Memory: 263.53 Gb (0%)
[ 00:06:07.540 ]: [Error] Process Used Physical Memory: 392.77 Mb
[ 00:06:07.540 ]: [Error] Process Used Virtual Memory: 764.46 Mb
================================================================

Log (1)

[ 00:07:31.391 ]: [Info] Reloading asset FlaxEngine.AnimationGraph, e2a9e5cf474635764a6c0cb28ae3cb55, C:\Users/BLACKB~1/AppData/Local/Temp/3d72d2b4-458f-855d-5651-938c90156d57/e2a9e5cf35764746b20c6c4a55cbe38a.flax
================================================================
[ 00:07:31.392 ]: [Error] Critical error! Reason: Unhandled exception: EXCEPTION_ACCESS_VIOLATION reading address 0xf9cd3ea8
[ 00:07:31.392 ]: [Error] Used Physical Memory: 9.31 Gb (58%)
[ 00:07:31.392 ]: [Error] Used Virtual Memory: 263.54 Gb (0%)
[ 00:07:31.392 ]: [Error] Process Used Physical Memory: 406.05 Mb
[ 00:07:31.392 ]: [Error] Process Used Virtual Memory: 787.04 Mb
================================================================

Flax version:

c5520f2

[mafiesto4]

Any specific anim graph or log file with stack trace?

[cNori]

Any specific anim graph

Any anim graph has this issue

log file with stack trace?

no stack trace
in logs if there was one i will include it in report

i will run the editor under a debugger and try give more information