I have a subscription to Photoshop CC and have checked for the latest updates to be installed on both my MacBook Pro and my iMac. In both cases the check for updates reports that the software version for Lightroom CC is up to date on both machines. However, the version installed on the laptop is 2015.8 with Camera Raw 9.8. In contrast the latest version installed on the desktop is 2015.5.1 with Camera Raw 9.5.1. Why do I not seem to have access to the latest versions of Lightroom and Camera Raw when I try to update my iMac application?
Try logging out of Creative Cloud on your desktop and then log back in. Check the version of your Creative Cloud Manager on your desktop. Look for your CC icon at the top of the screen. Look for the Gear icon to the right of your name > go into preferences and confirm the version you have on both laptop and desktop are the same [220.127.116.115].