运行 QWT 示例程序 (.pro） 与 Visual Studio 2010 错误

我在尝试运行qwt示例时遇到以下错误，示波器示例在Visual Studio QT中添加中是准确的。将出现生成错误，将显示以下行：

1>------ Build started: Project: oscilloscope, Configuration: Debug Win32 ------
1>Build started 3/1/2014 4:57:18 PM.
1>C:Program Files (x86)MSBuildMicrosoft.Cppv4.0Microsoft.CppBuild.targets(298,5): warning MSB8004: Intermediate Directory does not end with a trailing slash.  This build instance will add the slash as it is required to allow proper evaluation of the Intermediate Directory.
1>InitializeBuildStatus:
1>  Touching "Win32Debugoscilloscope.unsuccessfulbuild".
1>CustomBuild:
1>  Moc'ing knob.h...
1>  The syntax of the command is incorrect.
1>C:Program Files (x86)MSBuildMicrosoft.Cppv4.0Microsoft.CppCommon.targets(151,5): error MSB6006: "cmd.exe" exited with code 255.
1>
1>Build FAILED.
1>
1>Time Elapsed 00:00:00.05
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

有人知道为什么吗？不确定这个问题是否相关，但是当我从Visual Studio打开qt项目时，"Qt Visual Studio Addin"的输出显示：

--- (Import): Generating new project of oscilloscope.pro file
--- (qmake) : Using: c:qtqt5.1.15.1.1msvc2010binqmake
--- (qmake) : Working Directory: C:qwt-6.1.0examplesoscilloscope
--- (qmake) : Arguments: -tp vc "oscilloscope.pro" -o "oscilloscope.vcxproj" QMAKE_INCDIR_QT=$(QTDIR)include QMAKE_LIBDIR=$(QTDIR)lib QMAKE_MOC=$(QTDIR)binmoc.exe QMAKE_QMAKE=$(QTDIR)binqmake.exe
--- (qmake) : Exit Code: 0
Could not parse QTDIR from project file oscilloscope.vcxproj.
--- (Import): Added oscilloscope.vcxproj to Solution
=== Update uic steps ===
=== 0 uic steps updated. ===

=== Update rcc steps ===
=== 0 rcc steps updated. ===

"无法从项目文件示波器解析 QTDIR.vcxproj"可能是导致此问题的原因吗？

所有示例都可以在qt creator本身中运行。仅当我尝试从 Visual Studio 运行时，才会出现此问题。

我已经浏览了qwt网站上为qt创建者和MSVC找到的正确安装指南。知道为什么会出现这个问题吗？请帮忙。任何意见或建议将不胜感激。