Hi Rodgers... Sorry you are experiencing issues. Just to confirm, you can launch After Effects CC 2015 without error, and opening Character Animator from its File menu (File > Open Adobe Character Animator)? Also, are you using Preview 2 (it should say in the title bar of the application)?
Is the Creative Cloud application is running? If so, and you sign out from it, quit, restart Creative Cloud application, then sign back in, does that allow Character to launch?
If not, please contact Customer Support and they might be able to walk through some diagnostics to determine the cause of the problem. Thanks.
Thanks for your quick reply. I can launch AE with no problem, but get the error when I open Character Animator from my applications folder and even so when I try to launch it from AE. I am currently using Adobe Character Animator (Preview). I have the CC application running and have tried signing in and out of the application as well as through AE.
Thanks for confirming, Rodgers. Please try contacting Customer Support. Do let them know you've tried signing out and in. They might want to diagnose the problem directly on your machine (checking log files, permissions, etc.). Thanks.