Multiple Cameras usbfs: process () did not claim interface 0 before use

[neptune-files]

When running multiple cameras simultaneous on the same machine the usb driver reports:
usb 1-2.1: usbfs: process <PID> did not claim interface 0 before use.

This happens every time upon reading an image. The read succeeds but this message causes significant unnecessary load on the syslog process and fills the disk eventually.

The problem appears to be in the Etron code. Any help would be appreciated. It is currently making the cameras unusable for our application.