title: Qt debug error when running .exe
body: <p>I have written a game in c++ Qt, and I got a debug error message, when running the exe file. The error message appears only on one PC. It appears, when I try to display any text (<code>QLabel</code>, <code>QGraphicsTextItem</code>, anything). On other PC-s there is no error message.</p>
  
  <p>The message is: <code>Microsoft Visual C++ Debug Library</code></p>
  
  <pre><code>Debug Error!
  Program D:\gardener\Gardener.exe
  Module: 5.0.2
  File: global\qglobal.cpp
  Line: 1977
  
  ASSERT:"uint(i) &lt; uint(size())" in file q:\qt5_workdir\w\s\qtbase\include\qtcore../../src/corelib/tools/qstring.h, line 729
  
  Details:
  Problem Event Name: APPCRASH
  Application Name: Gardener.exe
  Application Version: 0.0.0.0
  Application Timestamp: 51d6cba1
  Fault Module Name: Qt5Cored.dll
  Fault Module Version: 5.0.2.0
  Fault Module Timestamp: 516366c9
  Exception Code: 80000003
  Exception Offset: 0005f1d1
  OS Version: 6.2.9200.2.0.0.256.49
  Locale ID: 1038
  Additional Information 1:5861
  Additional Information 2: 5861822e1919d7c014bbb064c64908b2
  Additional Information 3: f3d5
  Additional Information 4: f3d5be0cad2787556264647dc02181c3
  </code></pre>
  
  <p>I tried to google it, but no success. Does someone have any idea what the problem could be? Thanks!</p>