After effects won’t open on Mac

[detailed_fantasy6581]

Hello.

I just started using adobe suite and it was working great until a few days ago when I decided to move my Dropbox location to the external drive. 

Since then I keep getting a message saying "The Common Extensibility Platform (CEP) suite couldn't be loaded." This happens only to after effects and encoder. 

I uninstalled the app and reinstalled, tried a different account, and gave "read and write" access to all the adobe apps. 

It's still not working, and I need a solution. Could someone help me please?

[ToolfarmJP]

Would you reset the preferences?

https://helpx.adobe.com/after-effects/using/preferences.html

[detailed_fantasy6581]

Thank you, and yes I tried to, and since AE doesn't open, it doesn't allow me to change the settings.

I reached out to Apple Customer Support and they said it could be Dropbox's issue. I am waiting for their reply. I hope they can help.