Installing altera 11.1sp2 on ubuntu 14.04LTS

Hi, I have been trying to install altera 11.1sp2 for the past few hours and seem to be getting nowhere. I initially had the same problem as outlined in this thread(http://www.alteraforum.com/forum/showthread.php?t=34368) I have tried both simply typing into the console with the bash ./setup as well as editing the setup file to bash instead of sh. My current problem is as follows:

I enter the following into terminal

~/11.1sp2_259_quartus_free_linux$ ./setup

It outputs

Welcome to Altera Software Installer
Copyright (c) Altera Corporation 2011
Starting GUI. If nothing shows up, or you don't have an X display, run:
   ./setup --help 
for commandline usage.
NOTE: All output has been redirected to /tmp/altera_setup.log.HgItAUK044

Nothing shows up. So I then try

./setup --help

it returns

Traceback (most recent call last):
  File "<string>", line 23, in <module>
  File "/tools/python/2.6.4/linux32/pyinstaller/iu.py", line 436, in importHook
  File "/tools/python/2.6.4/linux32/pyinstaller/iu.py", line 521, in doimport
  File "/build/swbuild/SJ/nightly/11.1sp2/259/l32/work/installers/linux32/build/pyi.linux2/altera_installer_cmd/outPYZ1.pyz/cli", line 23, in <module>
  File "/tools/python/2.6.4/linux32/pyinstaller/iu.py", line 436, in importHook
  File "/tools/python/2.6.4/linux32/pyinstaller/iu.py", line 521, in doimport
  File "/build/swbuild/SJ/nightly/11.1sp2/259/l32/work/installers/linux32/build/pyi.linux2/altera_installer_cmd/outPYZ1.pyz/altera_installer", line 34, in <module>
  File "/tools/python/2.6.4/linux32/pyinstaller/iu.py", line 436, in importHook
  File "/tools/python/2.6.4/linux32/pyinstaller/iu.py", line 521, in doimport
  File "/build/swbuild/SJ/nightly/11.1sp2/259/l32/work/installers/linux32/build/pyi.linux2/altera_installer_cmd/outPYZ1.pyz/gui_common", line 18, in <module>
  File "/tools/python/2.6.4/linux32/pyinstaller/iu.py", line 477, in importHook
  File "/tools/python/2.6.4/linux32/pyinstaller/iu.py", line 495, in doimport
  File "/tools/python/2.6.4/linux32/pyinstaller/iu.py", line 297, in getmod
  File "/tools/python/2.6.4/linux32/pyinstaller/archive.py", line 468, in getmod
  File "/tools/python/2.6.4/linux32/pyinstaller/iu.py", line 109, in getmod
ImportError: /usr/lib/i386-linux-gnu/libfreetype.so.6: symbol png_set_expand_gray_1_2_4_to_8, version PNG12_0 not defined in file libpng12.so.0 with link time reference

Sorry if the solution is increadibly obvious im rather bad when it comes to linux I only started using it when I started at uni. Thanks a lot for any assistance you can give me.