QtKeywords and signal/slots

[giuseppe500]

hello.
I'm installed the qt 4.8 and i have a problem in compile:
this is my command line :
%QTDIR%\bin\moc.exe [QtMocNoWarnings] [QtCoreLib] [QtShared] [QtThread] [QtUnicode] [QtLargeFile] [QtKeywords] [QtOpenGLLib] [QtNoDebug] [QtGuiLib] -DWIN32 -D_MSC_VER=1500 -DWIN32 [Inputs] -o"$(IntDir)$(InputName)[QtMocPfx].cpp" && cl.exe $(IntDir)$(InputName)[QtMocPfx].cpp [QtCommandLine] /Fo"$(IntDir)$(InputName)[QtMocPfx].obj"
if i compile with this the signal/slot mechanism don't work .
If i remove this:
[QtKeywords]
all works fine!
why?
i use visual studio 2008 and 2010.

thanks