diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3527e9c0..5602a660 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -27,6 +27,7 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 - fixed asynchroniusly assigned PCA job not being properly detected [#1919](https://github.com/sandboxie-plus/Sandboxie/issues/1919)
 - fixed incompatybility with first windows 10 release [#3117](https://github.com/sandboxie-plus/Sandboxie/issues/3117)
 - fixed Remove Sandbox only deletes the contents of the sandbox when an application is running in the sandbox [#3118](https://github.com/sandboxie-plus/Sandboxie/issues/3118)
+- fixed crash issue with not peroeprly termianted script engine [#3120](https://github.com/sandboxie-plus/Sandboxie/issues/3120)
 
 
 
diff --git a/SandboxiePlus/SandMan/Engine/BoxEngine.cpp b/SandboxiePlus/SandMan/Engine/BoxEngine.cpp
index a886f17c..84d2004f 100644
--- a/SandboxiePlus/SandMan/Engine/BoxEngine.cpp
+++ b/SandboxiePlus/SandMan/Engine/BoxEngine.cpp
@@ -22,11 +22,11 @@
 #include <private/qv4script_p.h>
 #include <private/qv4qobjectwrapper_p.h>
 
-int CBoxEngine::m_InstanceCount = 0;
+QSet<CBoxEngine*> CBoxEngine::m_Instances;
 
 CBoxEngine::CBoxEngine(QObject* parent) : QThread(parent)
 {
-    m_InstanceCount++;
+    m_Instances.insert(this);
 
     m_State = eUnknown;
     m_pEngine = NULL;
@@ -37,6 +37,13 @@ CBoxEngine::CBoxEngine(QObject* parent) : QThread(parent)
 }
 
 CBoxEngine::~CBoxEngine()
+{
+    m_Instances.remove(this);
+
+    Stop();
+}
+
+void CBoxEngine::Stop()
 {
     m_Mutex.lock();
     if (m_State == eQuery || m_State == eReady)
@@ -48,11 +55,16 @@ CBoxEngine::~CBoxEngine()
     }
 
     if (!wait(30 * 1000)) {
-        qDebug() << "Failed to terminate Box Engine";
-        return;
+        qDebug() << "Failed to stop Box Engine";
+        terminate();
+        m_State = eCanceled;
     }
+}
 
-    m_InstanceCount--;
+void CBoxEngine::StopAll()
+{
+    foreach(CBoxEngine* pEngine, m_Instances)
+        pEngine->Stop();
 }
 
 QV4::ReturnedValue method_translate(const QV4::FunctionObject *b, const QV4::Value *v, const QV4::Value *argv, int argc)
@@ -288,9 +300,13 @@ QObject* CBoxEngine::GetDebuggerBackend()
 // CWizardEngine
 // 
 
+int CWizardEngine::m_InstanceCount = 0;
+
 CWizardEngine::CWizardEngine(QObject* parent) 
  : CBoxEngine(parent) 
 {
+    
+    m_InstanceCount++;
 }
 
 CWizardEngine::~CWizardEngine()
@@ -305,6 +321,8 @@ CWizardEngine::~CWizardEngine()
         }
     }
     theAPI->ReloadBoxes(true);
+
+    m_InstanceCount--;
 }
 
 bool CWizardEngine::ApplyShadowChanges()
@@ -376,7 +394,7 @@ QSharedPointer<CSbieIni> CWizardEngine::MakeShadow(const QSharedPointer<CSbieIni
     SBoxShadow& pShadow = m_Shadows[pIni->GetName().toLower()];
     if (!pShadow.pShadow) {
         QString ShadowName = pIni->GetName();
-        QString Suffix = tr("_Shadow");
+        QString Suffix = "_Shadow"; // do not translate must be a valid sandbox name suffix
         ShadowName.truncate(32 - (Suffix.length() + 3)); // BOXNAME_COUNT
         ShadowName = theAPI->MkNewName(ShadowName.append(Suffix));
 
@@ -455,4 +473,4 @@ void CWizardEngine::OpenOptions(const QString& box, const QString& page)
 	});
     //theGUI->SafeExec(pOptionsWnd);
     pOptionsWnd->showTab(page);
-}
+}
\ No newline at end of file
diff --git a/SandboxiePlus/SandMan/Engine/BoxEngine.h b/SandboxiePlus/SandMan/Engine/BoxEngine.h
index 9baa830e..a10f8871 100644
--- a/SandboxiePlus/SandMan/Engine/BoxEngine.h
+++ b/SandboxiePlus/SandMan/Engine/BoxEngine.h
@@ -14,6 +14,8 @@ public:
 
 	bool				RunScript(const QString& Script, const QString& Name, const QVariantMap& Params = QVariantMap());
 
+	static void			StopAll();
+
 	enum EState {
 		eUnknown,
 
@@ -47,8 +49,6 @@ public:
 	Q_INVOKABLE void	AppendLog(const QString& Line);
 	//QString				GetLog() const { QMutexLocker Locker(&m_Mutex); return m_Log; }
 
-	static int			GetInstanceCount() { return m_InstanceCount; }
-
 	CJSEngineExt*		GetEngine() { return m_pEngine; }
 
 	QObject*			GetDebuggerBackend();
@@ -71,6 +71,7 @@ protected:
 
 	virtual void		init();
 	virtual void		run();
+	virtual void		Stop();
 	//virtual bool		Wait();
 	virtual bool		Continue(bool bLocked, EState State = eRunning);
 
@@ -92,7 +93,7 @@ protected:
 
 	//QString				m_Log;
 
-	static int			m_InstanceCount;
+	static QSet<CBoxEngine*> m_Instances;
 };
 
 //////////////////////////////////////////////////////////////////////////////////////////
@@ -115,6 +116,7 @@ public:
 	void		SetApplyShadow(const QString& OriginalName, bool bApply = true);
 	bool		IsNoAppliedShadow(const QString& OriginalName);
 
+	static int	GetInstanceCount() { return m_InstanceCount; }
 
 	Q_INVOKABLE void OpenSettings(const QString& page);
 	Q_INVOKABLE void OpenOptions(const QString& box, const QString& page);
@@ -136,5 +138,7 @@ protected:
 	};
 
 	QMap<QString, SBoxShadow> m_Shadows;
+
+	static int			m_InstanceCount;
 };
 
diff --git a/SandboxiePlus/SandMan/SandMan.cpp b/SandboxiePlus/SandMan/SandMan.cpp
index f558dcb3..29baee19 100644
--- a/SandboxiePlus/SandMan/SandMan.cpp
+++ b/SandboxiePlus/SandMan/SandMan.cpp
@@ -258,6 +258,7 @@ CSandMan::CSandMan(QWidget *parent)
 	LoadState();
 
 	m_pProgressDialog = new CProgressDialog("");
+	m_pProgressDialog->setWindowTitle("Sandboxie-Plus");
 	m_pProgressDialog->setWindowModality(Qt::ApplicationModal);
 	connect(m_pProgressDialog, SIGNAL(Cancel()), this, SLOT(OnCancelAsync()));
 	m_pProgressModal = false;
@@ -313,6 +314,8 @@ CSandMan::~CSandMan()
 
 	StoreState();
 
+	CBoxEngine::StopAll();
+
 	theAPI = NULL;
 
 	theGUI = NULL;
@@ -1501,7 +1504,7 @@ bool CSandMan::IsFullyPortable()
 
 bool CSandMan::KeepTerminated()
 { 
-	if (CBoxEngine::GetInstanceCount() > 0)
+	if (CWizardEngine::GetInstanceCount() > 0)
 		return true;
 	return m_pKeepTerminated && m_pKeepTerminated->isChecked();
 }