I tried this and re install
Set the entire Adobe preferences folder and its contents to be read/write, not just read-only. I’m referring to this folder:
but didn't work
any suggest ?
please please help me on this
This is a common error that is fixed by going to the Adobe folder in the Library/Preferences folder and fixing the Read Write preferences. Change them all to read only, then change them back. If that doesn't fix the problem delete the entire After Effects preferences folder. If that doesn't help provide AE and OS build down to the last decimal point.