Upgrade to HPLIP 3.15.11

Here the same. My Hplip 3.5.7 is broken and can not be installed. And a manual installation of the 3.5.11 hangs. I can't print and scan...

please provide us with the details. What point it hangs so that we can debug the issue

I downloaded the install-script hplip-3.15.11.run from http://hplipopensource.com/ and started the installation on the shell with "sh hplip-3.15.11.run. The script starts and asked some questions. I answered everything with pressing the Enter-button ( = use default settings ). Then the script asks for my sudo password. After typing the sudo password, the script hangs. Nothing happens. I waited for hours ( left the script while I was shopping... ). Then I aborted with Ctrl + C.

I found a directory "hplip-3.15.11", which was created after calling the install-script and there inside a logfile, which contains the following (nothing helpfull):

hplip-install[11357]: info: :
hplip-install[11357]: info: :[01mHP Linux Imaging and Printing System (ver. 3.15.11)[0m
hplip-install[11357]: info: :[01mHPLIP Installer ver. 5.1[0m
hplip-install[11357]: info: :
hplip-install[11357]: info: :Copyright (c) 2001-15 HP Development Company, LP
hplip-install[11357]: info: :This software comes with ABSOLUTELY NO WARRANTY.
hplip-install[11357]: info: :This is free software, and you are welcome to distribute it
hplip-install[11357]: info: :under certain conditions. See COPYING file for more details.
hplip-install[11357]: info: :
hplip-install[11357]: info: :Installer log saved in: [01mhplip-install_Sun-22-Nov-2015_15:09:46.log[0m
hplip-install[11357]: info: :
hplip-install[11357]: info: :
note: Defaults for each question are maked with a '*'. Press <enter> to accept the default.
hplip-install[11357]: info: :
hplip-install[11357]: info: :
hplip-install[11357]: info: :[01mINSTALLATION MODE[0m
hplip-install[11357]: info: :[01m-----------------[0m
hplip-install[11357]: info: :Automatic mode will install the full HPLIP solution with the most common options.
hplip-install[11357]: info: :Custom mode allows you to choose installation options to fit specific requirements.
hplip-install[11357]: info: :
Initializing. Please wait...
hplip-install[11357]: info: :
hplip-install[11357]: info: :
hplip-install[11357]: info: :[01mINTRODUCTION[0m
hplip-install[11357]: info: :[01m------------[0m
hplip-install[11357]: info: :This installer will install HPLIP version 3.15.11 on your computer.
hplip-install[11357]: info: :Please close any running package management systems now (YaST, Adept, Synaptic, Up2date, etc).
hplip-install[11357]: info: :
hplip-install[11357]: info: :
hplip-install[11357]: info: :[01mDISTRO/OS CONFIRMATION[0m
hplip-install[11357]: info: :[01m----------------------[0m
hplip-install[11357]: info: :Distro appears to be Ubuntu 15.10.

hplip-install[11357]: info: :
hplip-install[11357]: info: :
hplip-install[11357]: info: :[01mENTER USER PASSWORD[0m
hplip-install[11357]: info: :[01m-------------------[0m
hplip-install[11357]: info: :
error: Aborted.

This is the point, where I pressed Ctrl + C.

I found the following bug report: https://answers.launchpad.net/hplip/+question/274669 - this what happens here on my computer.
Will try the solution which is decribed there and give feedback.

Driver 3.15.11 working fine, bug in install script.

Manual installation of the print driver worked, but not the binary plugin. The problem is installing hp-plugin. Install script is buggy. This here helped me (ubuntu 15.10 64-bit, hplip 3.5.11):
https://bugs.launchpad.net/hplip/+bug/1486731/comments/10

Yes, process installing plugin not responding after license agreement. Thanks for finding solutions :)

It's not a solution - it's a workaround. :-)
A solution would it be, if we would have a working installation package in Ubuntu.

I first tried installing 3.15.11 because my scanner stopped working. Then I removed the hplip package, reinstalled the original hplip 3.15.7 and run hp-setup. Scanner works now.

We are working on the fix. While we work on it please find the work around provided by Sergey here https://bugs.launchpad.net/hplip/+bug/1521006.

We apologize for the inconvenience