Error on plug out.childNames

[est77]

Version: Gaffer 0.56.1.0-linux
Third-party tools: None
Third-party modules: None

Description

Steps to reproduce

1. Create a camera
2. Create a group and connect the camera to the group
3. Create a standard options node and connect the group to it
4. Select the camera in the standard options node

Debug log

ERROR : PathListingWidget : Group.out.childNames : Invalid child name "est"

est is my user name on the computer I use, not sure if it helps.

[andrewkaufman]

I think I've seen something similar where a browser path defaults to /home/andrewk (my user dir)

[est77]

I can reproduce it in master too. Disabling and enabling the group node removes the error.