Hi Stefan,
I can answer yes on all questions. From the step 4 in setup, I can see :
filemanager-OK - C Filemanager 17.1 17.1
From the admin menu, filemanager is not present in the applications list.
I figure, it could be due to the upgrade process as I used it from a previous release.
I 'll try a fresh install using a new DB for testing purpose.