Avogdro v-1.2.0 Won't Open in v-9.0.0

["Stephen P. Molnar" <s.molnar@sbcglobal.net>]

I have just upgraded Debian platform to 9.0.0 (from 8.8.0).

The distribution Avogadro and dependencies installed (via Synaptic) 
without complaint.  However, here is the run log:

comp@AbNormal:~$ avogadro
"Avogadro version:	1.2.0	Git:
LibAvogadro version:	1.2.0	Git:	"
Locale:  "en_US"
Libavogadro translations not found.
System has OpenGL support.
About to test OpenGL capabilities.
OpenGL capabilities found:
	Double Buffering.
	Direct Rendering.
	Antialiasing.
Loading plugins: "/usr/bin/../lib/avogadro/1_2"
Searching for plugins in "/usr/lib/avogadro/1_2"
Searching for plugins in "/usr/lib/avogadro/1_2/colors"
Searching for plugins in "/usr/lib/avogadro/1_2/engines"
Searching for plugins in "/usr/lib/avogadro/1_2/extensions"
Searching for plugins in "/usr/lib/avogadro/1_2/tools"
Loading plugins: "/home/comp/.avogadro/1_2/plugins"
Settings are missing for the next engines: ()
QStackedLayout::setCurrentWidget: Widget 0x55ae0ef29520 not contained in 
stack
dev warning: Extension "GAMESS" is using a deprecated DockWidget loading 
method. See Extension::dockWidgets() documentation.
dev warning: Extension "Orbitals" is using a deprecated DockWidget 
loading method. See Extension::dockWidgets() documentation.
dev warning: Extension "Python Terminal" is using a deprecated 
DockWidget loading method. See Extension::dockWidgets() documentation.
dev warning: Extension "Vibration" is using a deprecated DockWidget 
loading method. See Extension::dockWidgets() documentation.
HOMO at:  -1
GLWidget initialisation...
GLSL support enabled, OpenGL 2.0 support confirmed.
GLWidget initialised...
createObjects()
libpng warning: iCCP: known incorrect sRGB profile
libpng warning: iCCP: known incorrect sRGB profile
libpng warning: iCCP: known incorrect sRGB profile
libpng warning: iCCP: known incorrect sRGB profile
libpng warning: cHRM: invalid chromaticities

I don't have the faintest idea as to what the problem might be, Avogadro 
ran without problems in Debian 8.8.0.

Assistance will be appreciated;

Thanks in advance.

--
Stephen P. Molnar, Ph.D.		Life is a fuzzy set
www.molecular-modeling.net		Stochastic and multivariate
(614)312-7528 (c)
Skype: smolnar1