Comment 0 for bug 1723422

Get that error now with each random package upgrade:

/usr/share/themes/Ambiance/gtk-2.0/apps/mate-panel.rc:30: error: invalid string constant "murrine-scrollbar", expected valid string constant

Looks like related to that change:

* gtk2: Ambiance, Radiance: inherit style fixes from MATE themes (LP:
    #961679)

 -- Marco Trevisan (Treviño) <mail@3v1n0.net> Thu, 12 Oct 2017 05:19:32 +0000

That installation is a default Ubuntu , no Mate installed

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: light-themes 16.10+17.10.20171012.1-0ubuntu1
ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4
Uname: Linux 4.13.0-16-generic x86_64
ApportVersion: 2.20.7-0ubuntu3
Architecture: amd64
CurrentDesktop: GNOME
Date: Fri Oct 13 14:52:43 2017
EcryptfsInUse: Yes
PackageArchitecture: all
SourcePackage: ubuntu-themes
UpgradeStatus: No upgrade log present (probably fresh install)