Thanks, Jeff (and everyone). Yes, it's all on the boot drive. All apps launch and run fine (AFAIK) except for Creative Cloud app.
If you're saying that CC is functioning "normally" but just won't see all of the apps in a custom location, then it doesn't seem like the solutions in that article are going to fix this problem, no? I tried 1-3 without any change. It seems like I'll just have to move them back to default, no? Are there any side-effects (other than the current issue) to moving apps around like this?
I haven't seen any so far, aside from the current issue.
Mrrmrr, the Adobe Creative Cloud desktop application itself is one of the applications which does not support a custom install location.
In general, I would recommend not utilizing custom install locations. You may find that you face unexpected errors, primarily if you use any third-party plug-ins or add-ons in the applications.
If you do wish to have an application installed in a custom spot, then please use the process listed in Uninstall or remove Creative Cloud apps to remove the current installation. You can then reinstall by using the method listed in Learn how to download your Adobe Creative Cloud apps . Please do not move already installed CC applications as that will most certainly affect the ability of the applications to function correctly.