Hi. VirtualBox 4.3.12 on win7x64, previous installation of sparty razor works OK in this setup.
Created new VB for lxqt 64bits. booted live cd, ran install, on installation finish went for reboot, froze on shutdown, reseted VM, started ok to login prompt, after login, NO GRAPHIC elements, no panels, no icons, changed right clic menu to wm, woked, but STILL NO panels, etc.
Rebooted in recover mode, did apt-get update and upgrade, went well
Rebooted, NADA, still no panels
Installed 5.0 RC1 version of Guest additions instead of navtive ones.
NADA, still no panels.