I'm on an MBP, with MacOS Sierra 10.12.6, and have three VM's, Win10+, Ubuntu 16 LTE, and Kali 2016, al worked great. This morning I upgraded to Parallels 13, and went through that install. Also before the Parallels upgrade and installed the latest version of Bitdefender, and all worked great. Now, after the Parallels 13 upgrade, Kali 2016, and Ubunt 16 LTE work fine, but, Win10+ doesn't. Windows goes to open, but I have a black screen, and it won't go into Coherence mode. What do I need to get, do, or whatever the case maybe to correct this matter? Many thanks