Frame driver on modifiers are kinda broken #99944

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opened 2022-07-24 14:38:50 +02:00 by Raimund Klink · 4 comments
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System Information
Operating system: Windows-11-10.0.22000-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 3080 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 516.59

Blender Version
Broken: version: 2.79 is completely broken regarding driver on modifier, 2.80, 2.93, 3.2.0, 3.3.0 Alpha, branch: master, commit date: 2022-07-23 20:57, hash: 0c3851d31f
Worked: never

Short description of error
The driver causes a weird behavior on modifiers if they get applied.

Exact steps for others to reproduce the error
Add Array modifier on the cube
Write #frame in the Count
Apply the modifier
The driver is still in the Outliner visible
If we save and open the .blend again, it will show this warning in the console:

WARN (bke.anim_sys): C:\Users\blender\git\blender-vdev\blender.git\source\blender\blenkernel\intern\anim_sys.c:4201 BKE_animsys_eval_driver: invalid driver - modifiers["Array"].count[0]

The weirdness continues if you add another Array modifier.
It still shows a Driver (the color and on hover) but does nothing if you move to frame 20 for example

#99944.blend

**System Information** Operating system: Windows-11-10.0.22000-SP0 64 Bits Graphics card: NVIDIA GeForce RTX 3080 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 516.59 **Blender Version** Broken: version: 2.79 is completely broken regarding driver on modifier, 2.80, 2.93, 3.2.0, 3.3.0 Alpha, branch: master, commit date: 2022-07-23 20:57, hash: `0c3851d31f` Worked: never **Short description of error** The driver causes a weird behavior on modifiers if they get applied. **Exact steps for others to reproduce the error** Add Array modifier on the cube Write `#frame` in the Count Apply the modifier The driver is still in the Outliner visible If we save and open the .blend again, it will show this warning in the console: ``` WARN (bke.anim_sys): C:\Users\blender\git\blender-vdev\blender.git\source\blender\blenkernel\intern\anim_sys.c:4201 BKE_animsys_eval_driver: invalid driver - modifiers["Array"].count[0] ``` The weirdness continues if you add another Array modifier. It still shows a Driver (the color and on hover) but does nothing if you move to frame 20 for example [#99944.blend](https://archive.blender.org/developer/F13312601/T99944.blend)
Author
Contributor

Added subscriber: @Raimund58

Added subscriber: @Raimund58
Member

Added subscriber: @PratikPB2123

Added subscriber: @PratikPB2123
Member

@Raimund58, Thanks for the report.
This was not considered as a bug. see: #89679 (Animation channels do not get removed from action when according modifier/constraint is deleted)

@Raimund58, Thanks for the report. This was not considered as a bug. see: #89679 (Animation channels do not get removed from action when according modifier/constraint is deleted)
Member

Closed as duplicate of #89679

Closed as duplicate of #89679
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Reference: blender/blender#99944
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