Among those advanced features is the option to create a flashable zip file from all of your backups, such that you can restore several apps in recovery (safestrap, in our case).
Unfortunately... this feature isn't working for me. When I choose to sign the update.zip file with ZipSigner, the process reaches 99% (and the update.zip file size around 3.2GB), and the final item being added is Titanium Backup. It will sit here indefinitely, until I touch the notification and open Titanium Backup. It will immediately finish, and the update.zip file will shrink to around 1.6kb. (I read the troubleshooting guide on Titanium Backup's website, and I do have the latest zipsigner installed).
If I do not sign the zip during creation... the operation will finish without intervention, and the file size will stay around 3.2GB. However, the file cannot be flashed in recovery.
If I try to sign the zip in the ZipSigner app... it will create the update-signed.zip file, but it remains only about 1.6kb in size.
Is this an issue with Titanium Backup (including the update.zip file created)... or a problem with ZipSigner?