Muon quits with an undisclosed error

[Teunis]

Since a couple of days and whenever I hit the Update icon in Muon it starts the download but a second later it throws an error pop-up.

I've started it via the Konsole but it gives very little info:

teunis@W520-15:~$ muon
Invalid pixmap specified.
Invalid pixmap specified.
No frame loaded
No frame loaded
No frame loaded
No frame loaded
No frame loaded
No frame loaded
No frame loaded
No frame loaded
No frame loaded
No frame loaded
No frame loaded
No frame loaded
No frame loaded
No frame loaded
No frame loaded
No frame loaded
No frame loaded
No frame loaded
No frame loaded
No frame loaded
No frame loaded
teunis@W520-15:~$

The first 9 instances of No frame loaded happen on start up, the rest during the error.

apt-get from the Konsole works fine, the results of update even show up in the status bar of Muon.

[oshunluvr]

Muon works here and I get these messages:

stuart@office:~$ muon
kf5.kiconthemes: "Theme tree: (Breeze)"
Invalid pixmap specified.
Invalid pixmap specified.
No frame loaded
No frame loaded
No frame loaded
kf5.kxmlgui: Registering action  "edit_undo"  under new name  "undo"
kf5.kxmlgui: Registering action  "edit_redo"  under new name  "redo"
No frame loaded
No frame loaded
No frame loaded
No frame loaded
No frame loaded
No frame loaded
Found a release
No frame loaded
No frame loaded
No frame loaded

Disregard: Just realized you're on 15.10 :/