Hi, thank you for your response. I&#39;ve figured out the reason. I substituted gdb for llvm compiler which was default in the build sequence and everything went well. According to this post(<a href="http://stackoverflow.com/questions/10838157/xcode-4-3-2-crash-on-build">http://stackoverflow.com/questions/10838157/xcode-4-3-2-crash-on-build</a>), it&#39;s the bug in the llvm 2.9 compiler that causes this problem.<br>
<br><div class="gmail_quote">2012/6/15 Joshua Ballanco <span dir="ltr">&lt;<a href="mailto:jballanc@gmail.com" target="_blank">jballanc@gmail.com</a>&gt;</span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">

                <div>
                    Hi,
                </div><div><br></div><div>Can you narrow down what part of your application causes the crash? Have you tried following the instructions on the wiki page for a basic app? If you&#39;re still experiencing a crash with that example, there may be a problem with your Xcode install.</div>
<div><br></div><div>Cheers,</div><div><br></div><div>Josh</div><div class="im">
                <div></div>
                 
                <p style="color:#a0a0a8">On Wednesday, June 6, 2012 at 10:46 AM, Àî¹û wrote:</p>
                </div><blockquote type="cite" style="border-left-style:solid;border-width:1px;margin-left:0px;padding-left:10px">
                    <span><div><div class="im"><div><span style="letter-spacing:normal;font-variant:normal;text-align:-webkit-auto;font-style:normal;background-color:rgb(240,247,255);display:inline!important;font-weight:normal;float:none;line-height:normal;text-transform:none;font-size:13px;white-space:normal;font-family:Consolas,&#39;Lucida Console&#39;,monospace;word-spacing:0px">Hi, I installed macruby 0.11 and created a simple macruby application with xcode 4.3.2 without changing anything. When I pressed the run button, xcode just crashed. Then I switched to macruby nightly build, the same thing happened again. Finally, I built macruby from source code following the instructions in macruby project&#39;s readme file but the same problem still existed. Did someone encountered the same problem?</span>
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