System Information
Operating system: Windows-10-10.0.16299 64 Bits
Graphics card: TITAN Xp COLLECTORS EDITION/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 419.35
Blender Version
Broken: version: 2.80 (sub 60), branch: blender2.7, commit date: 2019-05-03 21:09, hash: rBee0d8426ab6d
Worked: (optional)
Short description of error
opened a .blend created in 2.8.50, made a few changes, immediat crash pressing ctrl-s to save, no changes were saved in the blend or the quit file
Exact steps for others to reproduce the error
open a .blend created in an earlier version of 2.8 and attempt to save