diff --git a/src/plugins/cmakeprojectmanager/cmakerunconfiguration.cpp b/src/plugins/cmakeprojectmanager/cmakerunconfiguration.cpp
index b51748f33fa..c86c696eaeb 100644
--- a/src/plugins/cmakeprojectmanager/cmakerunconfiguration.cpp
+++ b/src/plugins/cmakeprojectmanager/cmakerunconfiguration.cpp
@@ -324,6 +324,13 @@ bool CMakeRunConfiguration::isEnabled() const
     return m_enabled;
 }
 
+QString CMakeRunConfiguration::disabledReason() const
+{
+    if (!m_enabled)
+        return tr("The executable is not built by the current buildconfiguration");
+    return QString();
+}
+
 // Configuration widget
 CMakeRunConfigurationWidget::CMakeRunConfigurationWidget(CMakeRunConfiguration *cmakeRunConfiguration, QWidget *parent)
     : QWidget(parent), m_ignoreChange(false), m_cmakeRunConfiguration(cmakeRunConfiguration)
diff --git a/src/plugins/cmakeprojectmanager/cmakerunconfiguration.h b/src/plugins/cmakeprojectmanager/cmakerunconfiguration.h
index 7e4413d069f..3fd6c6008df 100644
--- a/src/plugins/cmakeprojectmanager/cmakerunconfiguration.h
+++ b/src/plugins/cmakeprojectmanager/cmakerunconfiguration.h
@@ -91,6 +91,7 @@ public:
     void setEnabled(bool b);
 
     bool isEnabled() const;
+    QString disabledReason() const;
 
 signals:
     void baseEnvironmentChanged();
diff --git a/src/plugins/projectexplorer/runconfiguration.cpp b/src/plugins/projectexplorer/runconfiguration.cpp
index 6e56f6ac02d..c4f1f2cd7e9 100644
--- a/src/plugins/projectexplorer/runconfiguration.cpp
+++ b/src/plugins/projectexplorer/runconfiguration.cpp
@@ -206,6 +206,11 @@ bool RunConfiguration::isEnabled() const
     return true;
 }
 
+QString RunConfiguration::disabledReason() const
+{
+    return QString();
+}
+
 /*!
     \fn virtual QWidget *ProjectExplorer::RunConfiguration::createConfigurationWidget()
 
diff --git a/src/plugins/projectexplorer/runconfiguration.h b/src/plugins/projectexplorer/runconfiguration.h
index 94095fa6051..862edd28218 100644
--- a/src/plugins/projectexplorer/runconfiguration.h
+++ b/src/plugins/projectexplorer/runconfiguration.h
@@ -60,6 +60,7 @@ public:
     virtual ~RunConfiguration();
 
     virtual bool isEnabled() const;
+    virtual QString disabledReason() const;
     virtual QWidget *createConfigurationWidget() = 0;
 
     Target *target() const;
diff --git a/src/plugins/qmlprojectmanager/qmlprojectrunconfiguration.cpp b/src/plugins/qmlprojectmanager/qmlprojectrunconfiguration.cpp
index 07d6ac1f073..b3481695481 100644
--- a/src/plugins/qmlprojectmanager/qmlprojectrunconfiguration.cpp
+++ b/src/plugins/qmlprojectmanager/qmlprojectrunconfiguration.cpp
@@ -91,6 +91,13 @@ bool QmlProjectRunConfiguration::isEnabled() const
     return m_isEnabled;
 }
 
+QString QmlProjectRunConfiguration::disabledReason() const
+{
+    if (!m_isEnabled)
+        return tr("No qmlviewer or qmlobserver found.");
+    return QString();
+}
+
 void QmlProjectRunConfiguration::ctor()
 {
     // reset default settings in constructor
diff --git a/src/plugins/qmlprojectmanager/qmlprojectrunconfiguration.h b/src/plugins/qmlprojectmanager/qmlprojectrunconfiguration.h
index 247692b6bcf..63c3087c9bc 100644
--- a/src/plugins/qmlprojectmanager/qmlprojectrunconfiguration.h
+++ b/src/plugins/qmlprojectmanager/qmlprojectrunconfiguration.h
@@ -98,6 +98,7 @@ public:
 
     // RunConfiguration
     bool isEnabled() const;
+    QString disabledReason() const;
     virtual QWidget *createConfigurationWidget();
     Utils::OutputFormatter *createOutputFormatter() const;
     QVariantMap toMap() const;
diff --git a/src/plugins/qt4projectmanager/qt-desktop/qt4runconfiguration.cpp b/src/plugins/qt4projectmanager/qt-desktop/qt4runconfiguration.cpp
index 80174fa2791..7659d889517 100644
--- a/src/plugins/qt4projectmanager/qt-desktop/qt4runconfiguration.cpp
+++ b/src/plugins/qt4projectmanager/qt-desktop/qt4runconfiguration.cpp
@@ -143,6 +143,13 @@ bool Qt4RunConfiguration::isEnabled() const
     return m_parseSuccess;
 }
 
+QString Qt4RunConfiguration::disabledReason() const
+{
+    if (!m_parseSuccess)
+        return tr("The .pro file could not be parsed");
+    return QString();
+}
+
 void Qt4RunConfiguration::handleParseState(bool success)
 {
     bool enabled = isEnabled();
diff --git a/src/plugins/qt4projectmanager/qt-desktop/qt4runconfiguration.h b/src/plugins/qt4projectmanager/qt-desktop/qt4runconfiguration.h
index 645c287ddf8..5548d99980b 100644
--- a/src/plugins/qt4projectmanager/qt-desktop/qt4runconfiguration.h
+++ b/src/plugins/qt4projectmanager/qt-desktop/qt4runconfiguration.h
@@ -83,6 +83,7 @@ public:
     Qt4DesktopTarget *qt4Target() const;
 
     virtual bool isEnabled() const;
+    virtual QString disabledReason() const;
     virtual QWidget *createConfigurationWidget();
 
     virtual QString executable() const;
diff --git a/src/plugins/qt4projectmanager/qt-s60/s60devicerunconfiguration.cpp b/src/plugins/qt4projectmanager/qt-s60/s60devicerunconfiguration.cpp
index 39ce10b1b10..6617fc7fb85 100644
--- a/src/plugins/qt4projectmanager/qt-s60/s60devicerunconfiguration.cpp
+++ b/src/plugins/qt4projectmanager/qt-s60/s60devicerunconfiguration.cpp
@@ -161,6 +161,13 @@ bool S60DeviceRunConfiguration::isEnabled() const
     return m_validParse;
 }
 
+QString S60DeviceRunConfiguration::disabledReason() const
+{
+    if (!m_validParse)
+        return tr("The .pro file could not be parsed");
+    return QString();
+}
+
 QWidget *S60DeviceRunConfiguration::createConfigurationWidget()
 {
     return new S60DeviceRunConfigurationWidget(this);
diff --git a/src/plugins/qt4projectmanager/qt-s60/s60devicerunconfiguration.h b/src/plugins/qt4projectmanager/qt-s60/s60devicerunconfiguration.h
index 28131ddec19..60376571712 100644
--- a/src/plugins/qt4projectmanager/qt-s60/s60devicerunconfiguration.h
+++ b/src/plugins/qt4projectmanager/qt-s60/s60devicerunconfiguration.h
@@ -68,6 +68,7 @@ public:
     SymbianQtVersion *qtVersion() const;
 
     bool isEnabled() const;
+    QString disabledReason() const;
     QWidget *createConfigurationWidget();
 
     Utils::OutputFormatter *createOutputFormatter() const;
diff --git a/src/plugins/qt4projectmanager/qt-s60/s60emulatorrunconfiguration.cpp b/src/plugins/qt4projectmanager/qt-s60/s60emulatorrunconfiguration.cpp
index ebe575706e9..11c38db1e95 100644
--- a/src/plugins/qt4projectmanager/qt-s60/s60emulatorrunconfiguration.cpp
+++ b/src/plugins/qt4projectmanager/qt-s60/s60emulatorrunconfiguration.cpp
@@ -145,6 +145,13 @@ bool S60EmulatorRunConfiguration::isEnabled() const
     return m_validParse;
 }
 
+QString S60EmulatorRunConfiguration::disabledReason() const
+{
+    if (!m_validParse)
+        return tr("The .pro file could not be parsed");
+    return QString();
+}
+
 QWidget *S60EmulatorRunConfiguration::createConfigurationWidget()
 {
     return new S60EmulatorRunConfigurationWidget(this);
diff --git a/src/plugins/qt4projectmanager/qt-s60/s60emulatorrunconfiguration.h b/src/plugins/qt4projectmanager/qt-s60/s60emulatorrunconfiguration.h
index e9d285cabd5..6cb24997f22 100644
--- a/src/plugins/qt4projectmanager/qt-s60/s60emulatorrunconfiguration.h
+++ b/src/plugins/qt4projectmanager/qt-s60/s60emulatorrunconfiguration.h
@@ -69,6 +69,7 @@ public:
     Qt4SymbianTarget *qt4Target() const;
 
     bool isEnabled() const;
+    QString disabledReason() const;
     QWidget *createConfigurationWidget();
 
     Utils::OutputFormatter *createOutputFormatter() const;
diff --git a/src/plugins/remotelinux/maemorunconfiguration.cpp b/src/plugins/remotelinux/maemorunconfiguration.cpp
index 23699041cbe..4a432df2ee9 100644
--- a/src/plugins/remotelinux/maemorunconfiguration.cpp
+++ b/src/plugins/remotelinux/maemorunconfiguration.cpp
@@ -134,6 +134,13 @@ bool MaemoRunConfiguration::isEnabled() const
     return m_validParse;
 }
 
+QString MaemoRunConfiguration::disabledReason() const
+{
+    if (!m_validParse)
+        return tr("The .pro file could not be parsed");
+    return QString();
+}
+
 QWidget *MaemoRunConfiguration::createConfigurationWidget()
 {
     return new MaemoRunConfigurationWidget(this);
diff --git a/src/plugins/remotelinux/maemorunconfiguration.h b/src/plugins/remotelinux/maemorunconfiguration.h
index 064555a3ec5..19af6153689 100644
--- a/src/plugins/remotelinux/maemorunconfiguration.h
+++ b/src/plugins/remotelinux/maemorunconfiguration.h
@@ -81,6 +81,7 @@ public:
     virtual ~MaemoRunConfiguration();
 
     bool isEnabled() const;
+    QString disabledReason() const;
     QWidget *createConfigurationWidget();
     Utils::OutputFormatter *createOutputFormatter() const;
     Qt4ProjectManager::Qt4BaseTarget *qt4Target() const;