Lightroom Classic CC missing from list of CC apps

Today I updated the Lightroom Adobe CC app on my Macbook Pro laptop. After the update completed, I opened the Adobe CC menu from the toolbar, and saw that both Lightroom Classic CC and Lightroom CC are missing. The only LR app displaying on the menu is Lightroom CC (2015).

I tried restarting but that didn't help. Lightroom Classic CC is still missing. I only use Lightroom Classic CC so I'm stuck.

Lightroom Classic CC is still displaying in CC on my office iMac, so the problem is only on my Macbook, and it seems to have disappeared only after I updated. The laptop is running OS X Yosemite 10.10.5.

Any ideas why Lightroom Classic CC isn't displaying or accessible, and more importantly, how I can get it back?

Thanks!