Qt Creator asserts in buildgraph\executor.cpp:353

ERROR: ..\..\..\..\src\lib\corelib\buildgraph\executor.cpp:353 ASSERT: childArtifact->timestamp().isValid()
The following products could not be built for configuration Win32-debug:
...

set QT5_DIR=C:\Qt\Qt5.5.0\5.5\msvc2013\bin
set QBS_DIR=C:\Qt\qbs-1.4.5\bin
set SOURCE_DIR=C:\BuildDir\PTK5\Source
set BUILD_DIR=C:\BuildDir\PTK5\Build
cd /d %SOURCE_DIR%
call "C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\vcvarsall.bat" x86

rem rmdir /s /q "%BUILD_DIR%\Intermediate" <<== workaround

rem %QBS_DIR%\qbs setup-toolchains --detect

%QBS_DIR%\qbs setup-qt "%QT5_DIR%\qmake.exe" Win32
%QBS_DIR%\qbs config profiles.Win32.qbs.architecture x86
%QBS_DIR%\qbs config profiles.Win32.baseProfile MSVC2013_x86
rem %QBS_DIR%\qbs config preferences.qbsSearchPaths "%SOURCE_DIR%\qbs"
%QBS_DIR%\qbs build -f "%SOURCE_DIR%\PreBuild.qbs" -d "%BUILD_DIR%\Intermediate\Prebuild" profile:Win32 %JBUILD_CONFIG%
%QBS_DIR%\qbs build -f "%SOURCE_DIR%\Build.qbs" -d "%BUILD_DIR%\Intermediate\Build" profile:Win32 %JBUILD_CONFIG%