Error: Failed to save the Vivado user preferences file.

CRITICAL WARNING: [Common 17-741] No write access right to the local Tcl store at '/home/user1/.Xilinx/Vivado/2015.4/XilinxTclStore'. XilinxTclStore is reverted to the installation area. If you want to use local Tcl Store, please change the access right and relaunch Vivado.
ERROR: [Common 17-1257] Failed to create directory '/opt/Xilinx/Vivado/2015.4/tclapp'.
start_gui
Error: Failed to save the Vivado user preferences file. Reason: '/home/user1/.Xilinx/Vivado/2015.4/vivado.ini (Permission denied)'
Failed to create the shortcut directory: '/home/user1/.Xilinx/Vivado/2015.4/shortcuts'
Failed to create the layout directory: '/home/user1/.Xilinx/Vivado/2015.4/layouts/application'
Failed to create the commands directory: '/home/user1/.Xilinx/Vivado/2015.4/commands'
Failed to create the layout directory: '/home/user1/.Xilinx/Vivado/2015.4/layouts/'
Failed to create directory: /home/user1/.profile
Error: Failed to save the Vivado user preferences file. Reason: '/home/user1/.Xilinx/Vivado/2015.4/vivado.ini (Permission denied)'
Error: Failed to save the Vivado user preferences file. Reason: '/home/user1/.Xilinx/Vivado/2015.4/vivado.ini (Permission denied)'

Reference AR

Fixed everything by:

•  Open Terminal
• Changing Directory to .Xilinx in the home directory
• Change Directory to /Vivado 
• running sudo chmod -R 777 *