diff --git a/src/plugins/qt4projectmanager/qt4nodes.cpp b/src/plugins/qt4projectmanager/qt4nodes.cpp
index 80fbd409b35d2d1a8c88eb3ab2793c71d34ea1b1..106f58098e95bde572e589a6925e55af036665bb 100644
--- a/src/plugins/qt4projectmanager/qt4nodes.cpp
+++ b/src/plugins/qt4projectmanager/qt4nodes.cpp
@@ -1244,16 +1244,16 @@ void Qt4ProFileNode::updateCodeModelSupportFromBuild(const QStringList &files)
     }
 }
 
-void Qt4ProFileNode::updateCodeModelSupportFromEditor(const QString &uiFileName, Designer::FormWindowEditor *fw)
+void Qt4ProFileNode::updateCodeModelSupportFromEditor(const QString &uiFileName,
+                                                      const QString &contents)
 {
-    QMap<QString, Qt4UiCodeModelSupport *>::const_iterator it;
-    it = m_uiCodeModelSupport.constFind(uiFileName);
-    if (it != m_uiCodeModelSupport.constEnd()) {
-        it.value()->updateFromEditor(fw);
-    }
+    const QMap<QString, Qt4UiCodeModelSupport *>::const_iterator it =
+            m_uiCodeModelSupport.constFind(uiFileName);
+    if (it != m_uiCodeModelSupport.constEnd())
+        it.value()->updateFromEditor(contents);
     foreach (ProjectExplorer::ProjectNode *pro, subProjectNodes())
         if (Qt4ProFileNode *qt4proFileNode = qobject_cast<Qt4ProFileNode *>(pro))
-            qt4proFileNode->updateCodeModelSupportFromEditor(uiFileName, fw);
+            qt4proFileNode->updateCodeModelSupportFromEditor(uiFileName, contents);
 }
 
 QString Qt4ProFileNode::uiDirectory() const
diff --git a/src/plugins/qt4projectmanager/qt4nodes.h b/src/plugins/qt4projectmanager/qt4nodes.h
index 4b2d673e890c7ce9dc523f43b0395c472df13333..c2215238a00d05255fb3c57084db1a345c48ba6b 100644
--- a/src/plugins/qt4projectmanager/qt4nodes.h
+++ b/src/plugins/qt4projectmanager/qt4nodes.h
@@ -49,10 +49,6 @@ namespace Core {
 class ICore;
 }
 
-namespace Designer {
-class FormWindowEditor;
-}
-
 namespace Qt4ProjectManager {
 
 // Import base classes into namespace
@@ -207,7 +203,7 @@ public:
     QStringList variableValue(const Qt4Variable var) const;
 
     void updateCodeModelSupportFromBuild(const QStringList &files);
-    void updateCodeModelSupportFromEditor(const QString &uiFileName, Designer::FormWindowEditor *fw);
+    void updateCodeModelSupportFromEditor(const QString &uiFileName, const QString &contents);
 
     QString buildDir() const;
 
diff --git a/src/plugins/qt4projectmanager/qt4projectmanager.cpp b/src/plugins/qt4projectmanager/qt4projectmanager.cpp
index 0f58ec839b0b5c522fc85a76187d5c7855e6f740..d9c8480e2551d123981ae0fda0039f623a432d35 100644
--- a/src/plugins/qt4projectmanager/qt4projectmanager.cpp
+++ b/src/plugins/qt4projectmanager/qt4projectmanager.cpp
@@ -115,13 +115,14 @@ void Qt4Manager::init()
 void Qt4Manager::editorChanged(Core::IEditor *editor)
 {
     // Handle old editor
-    Designer::FormWindowEditor *lastEditor = qobject_cast<Designer::FormWindowEditor *>(m_lastEditor);
-    if (lastEditor) {
-        disconnect(lastEditor, SIGNAL(changed()), this, SLOT(uiEditorContentsChanged()));
+    Designer::FormWindowEditor *lastFormEditor = qobject_cast<Designer::FormWindowEditor *>(m_lastEditor);
+    if (lastFormEditor) {
+        disconnect(lastFormEditor, SIGNAL(changed()), this, SLOT(uiEditorContentsChanged()));
 
         if (m_dirty) {
+            const QString contents = lastFormEditor->contents();
             foreach(Qt4Project *project, m_projects)
-                project->rootProjectNode()->updateCodeModelSupportFromEditor(lastEditor->file()->fileName(), lastEditor);
+                project->rootProjectNode()->updateCodeModelSupportFromEditor(lastFormEditor->file()->fileName(), contents);
             m_dirty = false;
         }
     }
@@ -142,8 +143,9 @@ void Qt4Manager::editorAboutToClose(Core::IEditor *editor)
         if (lastEditor) {
             disconnect(lastEditor, SIGNAL(changed()), this, SLOT(uiEditorContentsChanged()));
             if (m_dirty) {
+                const QString contents = lastEditor->contents();
                 foreach(Qt4Project *project, m_projects)
-                    project->rootProjectNode()->updateCodeModelSupportFromEditor(lastEditor->file()->fileName(), lastEditor);
+                    project->rootProjectNode()->updateCodeModelSupportFromEditor(lastEditor->file()->fileName(), contents);
                 m_dirty = false;
             }
         }
diff --git a/src/plugins/qt4projectmanager/qtuicodemodelsupport.cpp b/src/plugins/qt4projectmanager/qtuicodemodelsupport.cpp
index 173fb9d1a9aeee92cacd1bb0ac3ac095fcf4cfea..472525dec9460c1412e42f82fd18dde3f8569d01 100644
--- a/src/plugins/qt4projectmanager/qtuicodemodelsupport.cpp
+++ b/src/plugins/qt4projectmanager/qtuicodemodelsupport.cpp
@@ -33,11 +33,11 @@
 #include "qt4project.h"
 #include "qt4target.h"
 
-#include <designer/formwindoweditor.h>
-
 using namespace Qt4ProjectManager;
 using namespace Internal;
 
+enum { debug = 0 };
+
 Qt4UiCodeModelSupport::Qt4UiCodeModelSupport(CppTools::CppModelManagerInterface *modelmanager,
                                              Qt4Project *project,
                                              const QString &source,
@@ -123,33 +123,32 @@ bool Qt4UiCodeModelSupport::runUic(const QString &ui) const
     Qt4BuildConfiguration *qt4bc = m_project->activeTarget()->activeBuildConfiguration();
     QProcess uic;
     uic.setEnvironment(qt4bc->environment().toStringList());
-    uic.start(qt4bc->qtVersion()->uicCommand(), QStringList(), QIODevice::ReadWrite);
-    uic.waitForStarted();
+    const QString uicCommand = qt4bc->qtVersion()->uicCommand();
+    if (debug)
+        qDebug() << "Qt4UiCodeModelSupport::runUic " << uicCommand << " on " << ui.size() << " bytes";
+    uic.start(uicCommand, QStringList(), QIODevice::ReadWrite);
+    if (!uic.waitForStarted())
+        return false;
     uic.write(ui.toUtf8());
     uic.closeWriteChannel();
-    if (uic.waitForFinished()) {
+    if (uic.waitForFinished() && uic.exitStatus() == QProcess::NormalExit && uic.exitCode() == 0) {
         m_contents = uic.readAllStandardOutput();
         m_cacheTime = QDateTime::currentDateTime();
-        return true;
+        if (debug)
+            qDebug() << "ok" << m_contents.size() << "bytes.";
+        return true;        
     } else {
-//        qDebug()<<"running uic failed"<<" using uic: "<<m_project->qtVersion(m_project->activeBuildConfiguration())->uicCommand();
-//        qDebug()<<uic.readAllStandardError();
-//        qDebug()<<uic.readAllStandardOutput();
-//        qDebug()<<uic.errorString();
-//        qDebug()<<uic.error();
+        if (debug)
+            qDebug() << "failed" << uic.readAllStandardError();
         uic.kill();
     }
     return false;
 }
 
-void Qt4UiCodeModelSupport::updateFromEditor(Designer::FormWindowEditor *fw)
+void Qt4UiCodeModelSupport::updateFromEditor(const QString &formEditorContents)
 {
-//    qDebug()<<"Qt4UiCodeModelSupport::updateFromEditor"<<fw;
-    if (runUic(fw->contents())) {
-//        qDebug()<<"runUic: success, updated on the fly";
+    if (runUic(formEditorContents)) {
         updateDocument();
-    } else {
-//        qDebug()<<"runUic: failed, not updated";
     }
 }
 
diff --git a/src/plugins/qt4projectmanager/qtuicodemodelsupport.h b/src/plugins/qt4projectmanager/qtuicodemodelsupport.h
index d7b46518d47f2d9e896f885bffe3e4ab14515e0f..e85be7c2e3307582ea8fb94f1f969035946253c8 100644
--- a/src/plugins/qt4projectmanager/qtuicodemodelsupport.h
+++ b/src/plugins/qt4projectmanager/qtuicodemodelsupport.h
@@ -34,10 +34,6 @@
 
 #include <QtCore/QDateTime>
 
-namespace Designer {
-class FormWindowEditor;
-}
-
 namespace Qt4ProjectManager {
 class Qt4Project;
 namespace Internal {
@@ -54,7 +50,7 @@ public:
     void setSourceName(const QString &name);
     virtual QByteArray contents() const;
     virtual QString fileName() const;
-    void updateFromEditor(Designer::FormWindowEditor *);
+    void updateFromEditor(const QString &formEditorContents);
     void updateFromBuild();
 private:
     void init();