Thank you for this! I've been an AVAST user for 10+ years. Worked flawlessly until recently. I have been struggling for the last 1-2 weeks with constant virtual machine errors when running VirtualBox. Google searches only found many articles saying to turn off Hardware-Assisted Virtualization, but this setting was unchecked on my system. The only way I could run a virtual machine was to temporarily disable all shields, which is obviously not a good solution.
I installed this beta, and initially I was able to start up multiple VMs without error, both running different versions of Linux. Unfortunately, when I attempted to update the software in one of the VMs, I again got the popup error with title "VirtualBox - Guru Meditation", with text beginning "A critical error has occurred while running the virtual machine and the virtual machine has been stopped." In the log file, the error recorded is VERR_VMM_SET_JMP_ABORTED_RESUME.
So for me, at least, this beta does not completely fix the issue. Please let me know if I can provide any further diagnostic assistance. My system is running Windows 7 Professional 64-bit, and my hardware is dual AMD Opteron 4324. Avast is reporting its version as 22.6.6017.