**System Information**
Operating system: Linux-5.8.0-48-generic-x86_64-with-glibc2.32 64 Bits
Graphics card: GeForce RTX 2080 SUPER/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 460.67
**Blender Version**
Broken: version: 2.93.0 Alpha, branch: master, commit date: 2021-03-30 17:43, hash: `rB67b40f829e29`
Worked: (2.92 Release)
**Short description of error**
After creating a keyframe on a simple deform modifier on lattice the blender closes on frame change.
**Exact steps for others to reproduce the error**
- Open the attached file and create another keyframe on the simple deform modifier of the lattice.
- After pressing "I" to insert the keyframe note that the lattice resets to its normal shape.
- Now the crash will happen on frame change.
I found a "workaround" for this that actually works.
- After the above first and second step just enter in edit mode on the lattice and it will "update" the deformed shape, now you can change the frame without crash.
{F9915024}