As the originator of this bug report I can say that I have removed 4.0.7-2 installed as per comment #24 and installed 4.0.7-1ubuntu1. krename now starts, thank you.
As the originator of this bug report I can say that I have removed 4.0.7-2 installed as per comment #24 and installed 4.0.7-1ubuntu1. krename now starts, thank you.