Titanium Desktop 1.2 RC1 build failure

TiDesktopRCBuildFailure

cl /Fobuild\win32\objs\modules\tiui\win\UIWin.obj /c modules\ti.UI\win\UIWin.cpp
 /TP /nologo /Z7 /EHsc /GR /MD /MD /DUNICODE /D_UNICODE /DOS_WIN32=1 /D_OS_NAME=
win32 /D_PRODUCT_VERSION=1.2.0 /D_PRODUCT_NAME=Titanium /D_GLOBAL_NS_VARNAME=Tit
anium /D_CONFIG_FILENAME=tiapp.xml /D_BOOT_RUNTIME_FLAG= /D_BOOT_HOME_FLAG= /D_D
ISTRIBUTION_URL=api.appcelerator.net /D_CRASH_REPORT_URL=api.appcelerator.net/p/
v1/app-crash-report /DOS_32=1 /DDEBUG=1 /DWIN32_CONSOLE=1 /DMODULE_NAME=tiui /DM
ODULE_VERSION=1.2.0 "/IC:\Program Files\Microsoft SDKs\Windows\v7.0\Include" "/I
C:\Program Files\Microsoft Visual Studio 9.0\VC\include" "/IC:\Program Files\Mic
rosoft Visual Studio 9.0\VC\atlmfc\include" "/IC:\Program Files\Microsoft Platfo
rm SDK for Windows Server 2003 R2\include" /I. /Ikroll /Ibuild\win32\sdk\include
 /Imodules\ti.App /Ikroll\thirdparty-win32-i386-r43\poco\include /Ikroll\thirdpa
rty-win32-i386-r43\webkit\include /Ikroll\thirdparty-win32-i386-r43\webkit\inclu
de /Ikroll\thirdparty-win32-i386-r43\icu\include
UIWin.cpp
modules\ti.UI\win\UIWin.cpp(66) : error C2275: 'CanPreprocessURLCallback' : ille
gal use of this type as an expression
        E:\dev\titanium_desktop\kroll\thirdparty-win32-i386-r43\webkit\include\W
ebKit/WebKitTitanium.h(24) : see declaration of 'CanPreprocessURLCallback'
modules\ti.UI\win\UIWin.cpp(67) : error C2275: 'PreprocessURLCallback' : illegal
 use of this type as an expression
        E:\dev\titanium_desktop\kroll\thirdparty-win32-i386-r43\webkit\include\W
ebKit/WebKitTitanium.h(25) : see declaration of 'PreprocessURLCallback'
scons: *** [build\win32\objs\modules\tiui\win\UIWin.obj] Error 2
scons: building terminated because of errors.