The "Cannot Run in Non-Royalty Serialized Mode" error typically occurs when Adobe Encore CS6 is unable to validate its license or when there's a mismatch in the serialization process. This could be due to various reasons such as:
: /Library/Application Support/Adobe/Adobe PCD and /Library/Application Support/Adobe/caps/caps.db
If you've tried the above and still see the error, a corrupted installation might be the culprit. Uninstall: Remove both Premiere Pro CS6 and Encore CS6. Use the Cleaner Tool: Adobe Creative Cloud Cleaner Tool to wipe away any leftover registry or preference files. Reinstall: