ID 137014 - DeepRead 'missing frames' on_error black, does not render black as Read node does

Problem summary
DeepRead 'missing frames' on_error black, does not render black as Read node does

Customer reported version
nuke.7.0v1

Customer reported platform
Linux 64-bit Red Hat Release 6.4

Steps to reproduce

1. Create a DeepRead node and set the file knob to something that

doesn't exist.

2. Change the "missing frames" (on_error) knob from "error" to "black".

3. Connect the DeepRead node to a DeepWrite node, or some other output node.

4. Save the Nuke script and render using the -x option. Instead of 

succeeding, Nuke will fail with an error like the following:

[13:59.23] ERROR: DeepRead1: error (-2) opening file: 

Reproduced by support
Nuke7.0v1-Nuke8.0v3

The DeepRead renders black for missing frames, as expected for GUI renders on all 3 operating systems. Command line render on MacOS was correct as well.

Support was not able to reproduce the problem with command line render on Linux Centos 5.4 or MacOS.