PlasticSCM - Icon 'unknown' not present in theme

I'm using CentOS Linux release 7.4.1708, Gnome 3.22.2 and I've installed PlasticSCM 6.0.16.1792.

I created a new repository and everything worked fine until I use the Workspace explorer or the Pending changes tabs (only when changes exists). Plastic shows several error pop-ups with the message:

Icon 'unknown' not present in theme

I've checked the logs in ${HOME}/.plastic4/gtkplastic.log.txt:

2017-12-04 16:43:15,252 (null) user at (null) ERROR ExceptionHandler - [HandleUnhandledGLibException] Unexpected error: Icon 'unknown' not present in theme.

I tried to change the icon theme from Adawait to Gnome using the Gnome Tweak Tool with no success.

Is there anything that I should configure to fix this problem?

Thank you.

Solution

I'm using pretty much the same setup and works for me. I installed from the latest iso at https://www.centos.org/download/:

Centos 7.4.1708:

> cat /etc/*elease
CentOS Linux release 7.4.1708 (Core)

gnome 3.22.2:

> cat /usr/share/gnome/gnome-version.xml
<?xml version="1.0" encoding="UTF-8"?>
<gnome-version>
 <platform>3</platform>
 <minor>22</minor>
 <micro>2</micro>
 <distributor>GNOME.Org</distributor>
 <date>2017-08-06</date>

Plastic version 6.0.16.1820 (Latest available as I write)

cm version
6.0.16.1820

This is what I have in the theme directory:

> ls -l -R /opt/plasticscm5/theme/*
http://txt.do/dqve8

Can you try changing your OS icon set?