Inspecting the unity source code I found two places where we use gdk_cairo_set_source_pixbuf and one of them was missing a NULL pointer check, so I've added that and I believe it should fix this bug (as I believe it's caused by a missing icon).
If you still get this after next week's release (3.8.2), please re-open.
Inspecting the unity source code I found two places where we use gdk_cairo_ set_source_ pixbuf and one of them was missing a NULL pointer check, so I've added that and I believe it should fix this bug (as I believe it's caused by a missing icon).
If you still get this after next week's release (3.8.2), please re-open.