Cannot view Qt objects in debugger

Rory_1

I have installed QtSDK 4.7.4 using the QtSDK windows installer on Win7 and running Qt Creator with Windows MinGW/GCC. I am unable to see Qt Objects in the Locals and Expressions window, although I do see the contents of QString. While reviewing the documentation I found this reference (at http://doc.qt.nokia.com/qtcreator-2.4/creator-debugging-helpers.html) which appears to address the issue:

bq. Enabling Debugging Helpers for Qt's Bootstrapped Applications
Qt's bootstrapped applications (such as moc and qmake) are built in a way that is incompatible with the default build of the debugging helpers. To work around this, add dumper.cpp to the compiled sources in the application Makefile.

bq. Choose Tools > Options > Debugger > Debugging Helper > Use debugging helper from custom location, and specify an invalid location, such as /dev/null.

I found dumper.cpp but I do not know how to "add dumper.cpp to the compiled sources in the application Makefile". Can I do this in the project pro file?

Second issue - Debugger helper does not have an option "use debugging helper from custom location" in my version of Creator options.

Other steps I have taken:

I have reviewed the debugger log to see if the debugging helper was loaded:

bq. sStarting debugger 'GdbEngine' for ABI 'x86-windows-msys-pe-32bit'...
dStart parameters: 'TextFinder' mode: 1
dABI: x86-windows-msys-pe-32bit
dExecutable: D:\Data\My Projects\Qt\TextFinder-build-desktop-Qt_4_7_4_for_Desktop_-MinGW_4_4__Qt_SDK__Debug\debug\TextFinder.exe
dDirectory: D:\Data\My Projects\Qt\TextFinder-build-desktop-Qt_4_7_4_for_Desktop-MinGW_4_4__Qt_SDK__Debug
dDebugger: D:\Programs\QtSDK\pythongdb\python_2.7based\gdb-i686-pc-mingw32.exe
dProject: D:\Data\My Projects\Qt\TextFinder (built: D:\Data\My Projects\Qt\TextFinder-build-desktop-Qt_4_7_4_for_Desktop-_MinGW_4_4__Qt_SDK__Debug)
dQt: D:\Programs\QtSDK\Desktop\Qt\4.7.4\mingw
dQML server: 127.0.0.1:3768
dSysroot:
dDebug Source Loaction:
dSymbol file:
dDumper libraries: D:\Programs\QtSDK\Desktop\Qt\4.7.4\mingw\qtc-debugging-helper\ D:\Programs\QtSDK\QtCreator\qtc-debugging-helper\69987583\ C:\Users\Rory\AppData\Local\Nokia\QtCreator\qtc-debugging-helper\69987583\

I found a related post at http://www.qtcentre.org/threads/45136-Can-t-see-container-contents-QStrings-when-debugging?highlight=locals+not+showing where I also posted.
I found this post that may be related but does not offer a solution http://developer.qt.nokia.com/forums/viewthread/10346.

Any help appreciated - Rory.