flash does not work, npviewer.bin critical errors?

[Anton Shterenlikht]

I've one laptop, which refuses to show flash, e.g. youtube.
Another laptop runs flash fine. Both run 10.1-stable.
This broken system is 10.1-STABLE #33 r282833.

I already deleted all packages and started from scratch - no change.
It seems compat.linux.osrelease=2.6.18 is no longer needed,
after src/UPDATING 20141215.

The only hint I see is this terminal output when
launching youtube page:

(npviewer.bin:963): Gtk-CRITICAL **: IA__gtk_widget_get_visual: assertion `GTK_IS_WIDGET (widget)' failed

(npviewer.bin:963): Gdk-CRITICAL **: IA__gdk_colormap_new: assertion `GDK_IS_VISUAL (visual)' failed

(npviewer.bin:963): Gdk-CRITICAL **: IA__gdk_colormap_alloc_colors: assertion `GDK_IS_COLORMAP (colormap)' failed

(npviewer.bin:963): Gtk-CRITICAL **: IA__gtk_widget_modify_bg: assertion `GTK_IS_WIDGET (widget)' failed

(npviewer.bin:963): Gtk-CRITICAL **: IA__gtk_widget_get_visual: assertion `GTK_IS_WIDGET (widget)' failed

(npviewer.bin:963): Gdk-CRITICAL **: IA__gdk_colormap_new: assertion `GDK_IS_VISUAL (visual)' failed

(npviewer.bin:963): Gdk-CRITICAL **: IA__gdk_colormap_alloc_colors: assertion `GDK_IS_COLORMAP (colormap)' failed

(npviewer.bin:963): Gtk-CRITICAL **: IA__gtk_widget_modify_bg: assertion `GTK_IS_WIDGET (widget)' failed

(npviewer.bin:963): Gtk-CRITICAL **: IA__gtk_widget_get_visual: assertion `GTK_IS_WIDGET (widget)' failed

(npviewer.bin:963): Gdk-CRITICAL **: IA__gdk_colormap_new: assertion `GDK_IS_VISUAL (visual)' failed

(npviewer.bin:963): Gdk-CRITICAL **: IA__gdk_colormap_alloc_colors: assertion `GDK_IS_COLORMAP (colormap)' failed

(npviewer.bin:963): Gtk-CRITICAL **: IA__gtk_widget_modify_bg: assertion `GTK_IS_WIDGET (widget)' failed

(npviewer.bin:963): Gtk-CRITICAL **: IA__gtk_widget_get_visual: assertion `GTK_IS_WIDGET (widget)' failed

(npviewer.bin:963): Gdk-CRITICAL **: IA__gdk_colormap_new: assertion `GDK_IS_VISUAL (visual)' failed

(npviewer.bin:963): Gdk-CRITICAL **: IA__gdk_colormap_alloc_colors: assertion `GDK_IS_COLORMAP (colormap)' failed

(npviewer.bin:963): Gtk-CRITICAL **: IA__gtk_widget_modify_bg: assertion `GTK_IS_WIDGET (widget)' failed


Is there any useful info here?

Thanks

Anton