Comment 5 for bug 1347705

LAZA,

The hint that this was a co-installables failure was when you showed the packages removed and you had numix removed according to the automatic resolution apt did. If you got numix from a PPA that particular package had some known issues just like the new split themes such as albatross-gtk-theme. That was the key to what tied these several bugs together. In 14.04, the themes were all in one package "shimmer-themes" which the numix package did not play nice with when installed alongside. Broken apart as they are in 14.10, they present a packaging error that is being fixed.

The numix package counts as a "theme" like the others do for the purpose of determining how everything on your screen is decorated even though it is normally thought of only in regards to the icon set.