The reason you see the blank regions is, that the audio folder has been moved or deleted.
A Hindenburg session consists of two elements.
1. Session File (session name. nhsx)
- the session file contains the information about the session.
2. File Folder (session name.Files)
- . the Files Folder contains the audio.
If you move or delete the File Folder. then the session will not know where the audio is.
When you open a session where the audio is missing, then you will be prompted to point to the Files Folder again.
If you press cancel, then the session will open with blank regions with red outlines.
You can also right-click on a region and choose permission - and from here you can point to the correct audio file.