I installed build 5208 on my iMac and the second time I ran it it started to install Parallel tools and in the middle Parallels hung up. I rebooted and now when windows starts up and you click the mouse in the windows window the mouse disappears. No mouse keys work either. If I push F11 it goes to the mac screen and the mouse comes back. I then uninstalled Parallels and reinstalled it after rebooting the mac. It still behaves the same way. If I try to install the tools, the wizard comes up in the windows screen but I cannot click on the next to get it to install. How can I get out of this loop?