QTDIR paring Error after latest Visual Studio update

[Artorias]

Greetings,
yesterday I updated my Visual Studio to Update 3.
When I try to open my .pro I get this Error:

--- (Import): Generating new project of CGViewer.pro file
--- (qmake) : Using: C:\Qt\Qt5.7.0\5.7\msvc2015_64\bin\qmake
--- (qmake) : Working Directory: D:\Workspace\SoSe2016\ComputerGrafik\CGViewer\CGViewer 2
--- (qmake) : Arguments: -tp vc "CGViewer.pro" -o "CGViewer.vcxproj" QMAKE_INCDIR_QT=$(QTDIR)\include QMAKE_LIBDIR=$(QTDIR)\lib QMAKE_MOC=$(QTDIR)\bin\moc.exe QMAKE_QMAKE=$(QTDIR)\bin\qmake.exe

[1] - WARNING: Could not parse Compiler option '-std=c++0x'; added to AdditionalOptions.
[2] - WARNING: You can suppress these warnings with CONFIG+=suppress_vcproj_warnings.
[3] - WARNING: Could not parse Compiler option '-std=c++0x'; added to AdditionalOptions.

--- (Import): Error(s): 3
--- (qmake) : Exit Code: 0

QTDIR konnte nicht aus Projektdatei CGViewer.vcxproj geparst werden.
--- (Import): Generated project could not be loaded.
--- (Import): Please look in the output above for errors and warnings.

Here .pro:

#-------------------------------------------------
#
# Project created by QtCreator 2014-03-06T11:52:40
#
#-------------------------------------------------

QT          += core gui opengl

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = CGViewer
TEMPLATE = app

OBJECTS_DIR		= ./obj
MOC_DIR 		= ./moc

QMAKE_CXXFLAGS += -std=c++0x

SOURCES     +=  src/main.cpp\
                src/Mainwindow.cpp \
                src/Scene.cpp \
                src/EditWidgets.cpp \
                src/Model.cpp \
                src/Light.cpp \
                src/Sphere.cpp \
                src/Skybox.cpp

HEADERS     +=  src/Mainwindow.h \
                src/CGTypes.h \
                src/Scene.h \
                src/EditWidgets.h \
                src/Model.h \
                src/Light.h \
                src/Sphere.h \
                src/CGFunctions.h \
                src/Skybox.h

CONFIG      += mobility debug console
MOBILITY    =


OTHER_FILES += \
                    shader/fragment.glsl \
                    shader/fragment_cel.glsl \
                    shader/vertex.glsl \
                    shader/sphereFragment.glsl \
                    shader/sphereVertex.glsl \
                    shader/rayVertex.glsl \
                    shader/rayVertex.glsl \
					shader/skybox_vertex.glsl \
					shader/chosen_fragment.glsl \
					shader/skybox.glsl \
                    shader/fragment_selected.glsl \
                    plane/plane.obj \
                    plane/plane.mtl \

LIBS += opengl32.lib
CONFIG += c++11

On my laptop on which I have not done that update everything is running as usual.
I already tryed the Visual Studio repair setup with no success.

I hope that I do not need to reinstall Visual Studio update 2 to get rid of the new update.

[raven-worx]

@Artorias
We are talking about VS2015?
And i suppose you are using the unofficial Qt Addin (Qt5Package)?

[jsulm]

@Artorias Regarding "WARNING: Could not parse Compiler option '-std=c++0x'": if you want to activate C++11 then use

CONFIG += c++11

instead in PRO file

[Artorias]

@raven-worx
Yes I am using this add in

[Artorias]

@jsulm
in my last collum i already use CONFIG += c++11

[jsulm]

@Artorias Then there is no need for QMAKE_CXXFLAGS += -std=c++0x

[Artorias]

@jsulm thanks for the tipp!

I solved my problem by reinstalling VS2015 Update 2.