I installed q2a v1.8 (just the core so no extra themes and/or plugins). I go to "Admin", then "Layout", and tick "Custom HTML in <head> section of every page:" and I put
there, when I click on save options, it redirects me to http://mydomain.com/index.php?qa=admin&qa_1=layout where "page not found" is shown.
and then when I go back to "Admin" and then "Layout", ""Custom HTML in <head> section of every page:" is not ticked and there is nothing inside the text box so it really means that the changes I made were not even saved.
Why are there so much bugs?