Yes, this has happened before and is most annoying: my version was okay till later today, I have not changed anything, C8 just decided to not show progress bar!?! It came back, for one project: the worse thing is the inability to cancel; this definitely has happened before in a previous version. UPDATE: read [SOLVED]crash on exit-Peaks-crashy vsts? Read this!) - #112 by jconstantine - Cubase - Steinberg Forums and wondered if this, also, was Graphic Card related, as had some odd vst behaviour, so just ‘clean’ installed Nvidia 362.00 from 364.72 and all is fine again 
, for now…