My AudioSafe client showed me in the past days about 30 music files that couldn't be decoded properly. I've later checked these files and I had no problems decoding them. What could be causing this behavior? And how do I "tell" my client these files are fine?

I'm using Monkey's Audio codec at Insane compression method. My folder structure and file names don't have strange Unicode characters like &*9827;&*9830;&*9824;, nor have more than 250 characters. Using version

All the log info look like this:

[Date] [Time]: Could not process:
[Drive]:\[Folder structure]\[File].ape
Reason: Unable to decode file '[Drive]:\[Folder structure]\[File].ape', is corrupted?