ShareFS may not be used recursively

Last mentioned in the forum in July 2012 (as far as I can see) here , this ShareFS error message appeared today on my ARMX6 (5.23 18-Mar-2016) after much use of ShareFS access to/from an Iyonix (5.22).

The Iyo can still read and write to the ARMX6’s discs before and after a reboot. The ARMX6, however, produces the message on every attempt to access the Iyo’s disc, stops any access, and will need a reboot (presumably) to restore normal service.

[Pause…] It did.