Copy and paste the amtlib.dll in the 32bit folder for 32bit systems or the 64bit folder for 64bit systems in your C:Program FilesAdobeAdobe After Effects CS6Support Files directory
Copy and paste the amtlib.dll in the 32bit folder for 32bit systems or the 64bit folder for 64bit systems in your C:Program FilesAdobeAdobe After Effects CS6Support Filesdirectory