When clicking on the link, in the top-right: New update: 1.7
I get:
Piwik kan de huidige installatie niet overschrijven. Je kunt de huidige map/bestands rechten wijzigen, of de nieuwe versie downloaden en versie 1.7 manueel installeren:
Piwik cannot overwrtie … You can change the currently assigned rights to the maps/ files, or … install manually …
[s]Which maps does this message cocern?
Does this only refer to the same maps/ files I had to change during installation, or all maps and files?
First, you’ve posted this in the wrong forum. A “How-to” or “tutorial” is an explaination of a process. Your post is a request for help or notification of a problem.
Perhaps a moderator will move this to the appropriate forum.
In regards to your problem - there are two. The first one is that you did not change your file permissions before running the upgrade.
The second problem is that the resulting error message seems to use the word ‘right’ when it should use “write”. These sound the same in English, but mean very different things.