Atomic Parsley Segmentation Fault

[Barry Caruth]

When running get_iplayer (latest from git) on Raspbian I see this
entry in the log for every download:

> INFO: MP4 tagging M4A file
> INFO: Command exit code 2 (raw code = 11)
> WARNING: Failed to tag M4A file

I'm assuming this indicates an underlying Atomic Parsley issue so I
tried running AP directly on a downloaded MP4 as follows:

> AtomicParsley "/path/to/previously_downloaded_mp4" -T
> Segmentation Fault

Any ideas how to track this problem down? Some sort of library conflict?

It's not a fatal error - the MP4 is playable but I'd like to get
tagging working if I can.

Thanks.