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I have installed Qt Creator using Ubuntu Software Center but when I try to run it nothing happens. There is no error message, no new process, no new window.

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    run it from terminal qtcreator – kenn Aug 25 '14 at 19:02
  • Then I get: Illegal instruction (core dumped). Is there any way to examine what this is caused by ? – Al Bundy Aug 25 '14 at 19:12
  • I used file /usr/bin/qtcreator to see if it is 32-bit and it is. – Al Bundy Aug 25 '14 at 19:20
  • try to reinstall it sudo apt-get install --reinstall qtcreator – kenn Aug 25 '14 at 19:23
  • I tried reinstalling qtcreator and even Ubuntu. It does not change anything. – Al Bundy Aug 25 '14 at 19:50
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You may be running QtCreator on an old CPU that's missing SSE2 instructions, hence the "illegal instruction" message. See this question on archlinux:https://bugs.archlinux.org/task/34228 .

However, I don't know if it possible to recompile recent QtCreator (2.7) so that it doesn't use SSE2 instructions.

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