Sure, I'd be happy to help you troubleshoot your Rekordbox playlist export issues. Here are a few steps you can take:

1. **Check Your Software Version**: Ensure that you're running the latest version of Rekordbox. Updates often include bug fixes that can resolve issues you're experiencing.

2. **Check Your File Types**: Rekordbox supports a variety of audio file types, but not all. Make sure the files in your playlist are in a supported format.

3. **Check Your Export Destination**: If you're exporting to an external device, make sure it's properly connected and has enough storage space.

4. **Rebuild Your Database**: If the above steps don't work, you might need to rebuild your Rekordbox database. This is a last resort, as it will remove all your playlists and analysis data. To do this, go to File > Library > Rebuild Database.

5. **Contact Support**: If none of these steps work, it might be time to contact Pioneer DJ support. They can help diagnose and resolve more complex issues.

Remember to back up your data regularly, especially before doing something like rebuilding your database. This can prevent data loss if something goes wrong.