The SM5's SD card contains fewer folders of audio files than the number of active channels.
For example, you may have two acoustic channels active, but only one folder containing acoustic audio files, named Data_AC/.
Cause: Acoustic Recordings Saved as Combined, Two-Channel Files
Regardless of whether you have enabled one or two acoustic channels, all acoustic audio files are saved to the same folder, Data_AC/. When two channels are enabled, each recording contains the audio recorded from both acoustic channels. This is the intended behavior.
Solution (Optional): Split Recordings Into Separate Channels
If you prefer to process your acoustic recording data as separate, single-channel recordings from each acoustic channel, you can use Kaleidoscope to split two-channel recordings into separate files. This process does not require a paid license for Kaleidoscope Pro.