Hi Esteban, What flavour of VM is going to be in Pharo 6 release? Do you think a move to the thread-beat one is a feasible? On Case 19820 "Epicea: GrafPort error when open browser" [1] I see the comment "These are two different VM versions. In both I have sometimes this crash, sometimes another crashes. The threaded VM version seems to be working (it's what I'm using now), but with the itimer ones I started to have this crashes." and I guess the thread-beat is more robust in interaction with third-party FFI signal handling. Should we particularly encourage everyone to update to latest thread-beat VM to provide additional testing before release? cheers -ben [1] https://pharo.fogbugz.com/f/cases/19820