You are immediately disconnected when attempting to start Remote Control when the host is a Mac. You also receive the following error message in the details of the resulting dialog box:

Failed to start Remote Control process: 10009

Restart the host computer, as follows:

• If you have direct access to the Mac, simply reboot as normal
• If connecting remotely, log in to LogMeIn.com and go to the Home page. Connect to the computer and then go to Preferences > Advanced Settings > Reboot Options > Hard Reboot.

Once the computer is restarted, Remote Control access should be restored.