Well, the real error is a few lines before. This only says "There was an error"


Without real error log, there's no need to give feedback. Until now, I have seen no one explaining in detail their bugs, nobody has posted any error message and also what they had in their sources.list

My upgrade using apt-get went fine. I prefer to do it and watch error message in real time and do not want any gui to choose for me.

I still miss a changelog though.
In fact, this changelog could be built easily by merging all the diffs from old versions to new versions. Unfortunatly I neither have old versions numbers (of the 61 apps upgraded) nor changelog (thanks docpurge).
There's also no apt changelog (/var/log/dpkg.log). Only somebody who has not yet done the upgrade could generate such changelog.