I cannot install Joomla (on Ubuntu 12.04, Apache, MySQL). All required prerequisites seem to be met, but after hitting the final install button, a popup appears (see attached image), but nothing happens. Also, a check on the server seems to indicate that no files or mysql activity takes place.
I retried with several different versions of Joomla, without success.
What can this be, or where can I look more closely what is supposed to happen at this very stuck moment?
busy == true
. So at a guess, one of the Ajax calls has failed for some reason. Could you try running the installation again but with your browsers console open and report any errors if you see any – Lodder May 23 '16 at 11:22