 <p>I have experienced this error many times and the solution for me was to increase the apache binary (apache.exe or httpd.exe) stack size. You will need the Visual studio to do that, but you can use the trial version, as I did. You don't even need to turn it on. The command is:</p> <pre><code>C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\bin\amd64&gt;editbin /STACK:8000000 "c:\Program Files (x86)\WAMP\apache\bin\apache.exe" </code></pre> <p>Change the paths above according to your environment of course.</p> <p>In the Visual studio directory VC/binary/ there are several utilities by the name editbin.exe. Use the one suitable for you platform or try them one by one, until it works (as I did).</p>