Has anyone working Parallel 7 on Mavericks?
From meme1255's reply here

ExtensionsPath=&quot;/Library/Parallels/Parallels Service.app/Contents/Kexts/10.6/&quot;
cd &quot;$ExtensionsPath&quot;

sudo kextutil prl_hypervisor.kext/
sudo kextutil prl_vnic.kext/
sudo kextutil prl_hid_hook.kext/
sudo kextutil -d ./prl_hypervisor.kext prl_netbridge.kext/
sudo kextutil prl_usb_connect.kext

open /Applications/Parallels\ Desktop.app 

And you have to give parallels permissions to accessibility to get keyboard/mouse working:
System Preferences &gt; Security &amp; Privacy &gt; Privacy Tab &gt; Accessibility section

You also need to reset Parallel's network setting.