diff --git a/GUI/extenwindow.cpp b/GUI/extenwindow.cpp
index b522a67..db645a9 100644
--- a/GUI/extenwindow.cpp
+++ b/GUI/extenwindow.cpp
@@ -105,12 +105,11 @@ void ExtenWindow::Sync()
 	}
 }
 
-void ExtenWindow::Add(QString fileName)
+void ExtenWindow::Add(QFileInfo extenFile)
 {
-	if (!fileName.endsWith(".dll")) return;
-	QString extenName = fileName.mid(fileName.lastIndexOf("/") + 1);
-	QFile::copy(fileName, extenName);
-	Load(extenName.split(".dll")[0]);
+	if (extenFile.suffix() != "dll") return;
+	QFile::copy(extenFile.fileName(), extenFile.absoluteFilePath());
+	Load(extenFile.completeBaseName());
 	Sync();
 }
 
diff --git a/GUI/extenwindow.h b/GUI/extenwindow.h
index 5cc747f..aa99ebf 100644
--- a/GUI/extenwindow.h
+++ b/GUI/extenwindow.h
@@ -26,7 +26,7 @@ private slots:
 	void on_rmvButton_clicked();
 
 private:
-	void Add(QString fileName);
+	void Add(QFileInfo extenFile);
 	void Sync();
 	bool eventFilter(QObject* target, QEvent* event);
 	void dragEnterEvent(QDragEnterEvent* event);
diff --git a/GUI/host/host.cpp b/GUI/host/host.cpp
index d4b8e7f..9874532 100644
--- a/GUI/host/host.cpp
+++ b/GUI/host/host.cpp
@@ -15,9 +15,9 @@ namespace
 		ProcessRecord(DWORD processId, HANDLE pipe) :
 			processId(processId),
 			pipe(pipe),
-			fileMapping(OpenFileMappingW(FILE_MAP_READ, FALSE, (ITH_SECTION_ + std::to_wstring(processId)).c_str())),
-			mappedView(MapViewOfFile(fileMapping, FILE_MAP_READ, 0, 0, HOOK_SECTION_SIZE / 2)), // jichi 1/16/2015: Changed to half to hook section size
-			sectionMutex(ITH_HOOKMAN_MUTEX_ + std::to_wstring(processId))
+			mappedFile(OpenFileMappingW(FILE_MAP_READ, FALSE, (ITH_SECTION_ + std::to_wstring(processId)).c_str())),
+			view(MapViewOfFile(mappedFile, FILE_MAP_READ, 0, 0, HOOK_SECTION_SIZE / 2)), // jichi 1/16/2015: Changed to half to hook section size
+			viewMutex(ITH_HOOKMAN_MUTEX_ + std::to_wstring(processId))
 		{
 			OnConnect(processId);
 		}
@@ -25,14 +25,14 @@ namespace
 		~ProcessRecord()
 		{
 			OnDisconnect(processId);
-			UnmapViewOfFile(mappedView);
+			UnmapViewOfFile(view);
 		}
 
 		TextHook GetHook(uint64_t addr)
 		{
-			if (mappedView == nullptr) return {};
-			LOCK(sectionMutex);
-			auto hooks = (const TextHook*)mappedView;
+			if (view == nullptr) return {};
+			LOCK(viewMutex);
+			auto hooks = (const TextHook*)view;
 			for (int i = 0; i < MAX_HOOK; ++i)
 				if (hooks[i].hp.insertion_address == addr) return hooks[i];
 			return {};
@@ -41,16 +41,16 @@ namespace
 		template <typename T>
 		void Send(T data)
 		{
-			DWORD DUMMY;
+			std::enable_if_t<sizeof(data) < PIPE_BUFFER_SIZE, DWORD> DUMMY;
 			WriteFile(pipe, &data, sizeof(data), &DUMMY, nullptr);
 		}
 
 	private:
 		DWORD processId;
 		HANDLE pipe;
-		AutoHandle<> fileMapping;
-		LPCVOID mappedView;
-		WinMutex sectionMutex;
+		AutoHandle<> mappedFile;
+		LPCVOID view;
+		WinMutex viewMutex;
 	};
 
 	ThreadSafePtr<std::unordered_map<ThreadParam, std::shared_ptr<TextThread>>> textThreadsByParams;
@@ -60,8 +60,8 @@ namespace
 
 	void RemoveThreads(std::function<bool(ThreadParam)> removeIf)
 	{
-		auto lockedTextThreadsByParams = textThreadsByParams.operator->();
-		for (auto it = lockedTextThreadsByParams->begin(); it != lockedTextThreadsByParams->end(); removeIf(it->first) ? it = lockedTextThreadsByParams->erase(it) : ++it);
+		auto[lock, textThreadsByParams] = ::textThreadsByParams.operator->();
+		for (auto it = textThreadsByParams->begin(); it != textThreadsByParams->end(); removeIf(it->first) ? it = textThreadsByParams->erase(it) : ++it);
 	}
 
 	void CreatePipe()
@@ -104,9 +104,9 @@ namespace
 					auto tp = *(ThreadParam*)buffer;
 					if (textThreadsByParams->count(tp) == 0)
 					{
-						auto textThread = textThreadsByParams->insert({ tp, std::make_shared<TextThread>(tp, Host::GetHookParam(tp), Host::GetHookName(tp)) }).first->second;
-						if (textThreadsByParams->size() > MAX_THREAD_COUNT)	Host::AddConsoleOutput(TOO_MANY_THREADS);
-						else textThread->Start();
+						auto textThread = textThreadsByParams->insert({ tp, std::make_shared<TextThread>(tp, Host::GetHookParam(tp)) }).first->second;
+						if (textThreadsByParams->size() < MAX_THREAD_COUNT)	 textThread->Start();
+						else Host::AddConsoleOutput(TOO_MANY_THREADS);
 					}
 					textThreadsByParams->at(tp)->Push(buffer + sizeof(tp), bytesRead - sizeof(tp));
 				}
@@ -146,6 +146,16 @@ namespace Host
 		CreatePipe();
 	}
 
+	void Shutdown()
+	{
+		auto NOP = [](auto... args) { return NULL; };
+		ProcessRecord::OnConnect = NOP;
+		ProcessRecord::OnDisconnect = NOP;
+		TextThread::OnCreate = NOP;
+		TextThread::OnDestroy = NOP;
+		TextThread::Output = NOP;
+	}
+
 	bool InjectProcess(DWORD processId, DWORD timeout)
 	{
 		if (processId == GetCurrentProcessId()) return false;
@@ -193,19 +203,14 @@ namespace Host
 		processRecordsByIds->at(processId)->Send(HostCommandType(HOST_COMMAND_DETACH));
 	}
 
-	void InsertHook(DWORD processId, HookParam hp, std::string name)
+	void InsertHook(DWORD processId, HookParam hp)
 	{
-		processRecordsByIds->at(processId)->Send(InsertHookCmd(hp, name));
+		processRecordsByIds->at(processId)->Send(InsertHookCmd(hp));
 	}
 
-	HookParam GetHookParam(DWORD processId, uint64_t addr)
+	HookParam GetHookParam(ThreadParam tp)
 	{
-		return processRecordsByIds->at(processId)->GetHook(addr).hp;
-	}
-
-	std::wstring GetHookName(DWORD processId, uint64_t addr)
-	{
-		return Util::StringToWideString(processRecordsByIds->at(processId)->GetHook(addr).hookName).value();
+		return processRecordsByIds->at(tp.processId)->GetHook(tp.addr).hp;
 	}
 
 	std::shared_ptr<TextThread> GetThread(ThreadParam tp)
diff --git a/GUI/host/host.h b/GUI/host/host.h
index 81d1843..569a1f3 100644
--- a/GUI/host/host.h
+++ b/GUI/host/host.h
@@ -5,17 +5,15 @@
 
 namespace Host
 {
-	typedef std::function<void(DWORD)> ProcessEventCallback;
+	using ProcessEventCallback = std::function<void(DWORD)>;
 	void Start(ProcessEventCallback OnConnect, ProcessEventCallback OnDisconnect, TextThread::EventCallback OnCreate, TextThread::EventCallback OnDestroy, TextThread::OutputCallback Output);
+	void Shutdown();
 
 	bool InjectProcess(DWORD processId, DWORD timeout = 5000);
 	void DetachProcess(DWORD processId);
-	void InsertHook(DWORD processId, HookParam hp, std::string name = "");
+	void InsertHook(DWORD processId, HookParam hp);
 
-	HookParam GetHookParam(DWORD processId, uint64_t addr);
-	inline HookParam GetHookParam(ThreadParam tp) { return GetHookParam(tp.processId, tp.addr); }
-	std::wstring GetHookName(DWORD processId, uint64_t addr);
-	inline std::wstring GetHookName(ThreadParam tp) { return GetHookName(tp.processId, tp.addr); }
+	HookParam GetHookParam(ThreadParam tp);
 
 	std::shared_ptr<TextThread> GetThread(ThreadParam tp);
 	void AddConsoleOutput(std::wstring text);
diff --git a/GUI/host/textthread.cpp b/GUI/host/textthread.cpp
index 0ece4b8..697961b 100644
--- a/GUI/host/textthread.cpp
+++ b/GUI/host/textthread.cpp
@@ -4,16 +4,23 @@
 #include "host.h"
 #include "util.h"
 
-TextThread::TextThread(ThreadParam tp, HookParam hp, std::wstring name) : handle(threadCounter++), name(name), tp(tp), hp(hp) 
+TextThread::TextThread(ThreadParam tp, HookParam hp, std::optional<std::wstring> name) : 
+	handle(threadCounter++), 
+	name(name.value_or(Util::StringToWideString(hp.name).value())), 
+	tp(tp), 
+	hp(hp)
 {
 	OnCreate(this);
 }
 
 TextThread::~TextThread()
 {
-	SetEvent(deletionEvent);
-	flushThread.join();
-	OnDestroy(this);
+	if (flushThread.joinable())
+	{
+		SetEvent(deletionEvent);
+		flushThread.join();
+		OnDestroy(this);
+	}
 }
 
 std::wstring TextThread::GetStorage()
diff --git a/GUI/host/textthread.h b/GUI/host/textthread.h
index 10d6cbd..8fe7d17 100644
--- a/GUI/host/textthread.h
+++ b/GUI/host/textthread.h
@@ -6,8 +6,8 @@
 class TextThread
 {
 public:
-	typedef std::function<void(TextThread*)> EventCallback;
-	typedef std::function<bool(TextThread*, std::wstring&)> OutputCallback;
+	using EventCallback = std::function<void(TextThread*)>;
+	using OutputCallback = std::function<bool(TextThread*, std::wstring&)>;
 	inline static EventCallback OnCreate, OnDestroy;
 	inline static OutputCallback Output;
 
@@ -16,9 +16,7 @@ public:
 	inline static int defaultCodepage = SHIFT_JIS;
 	inline static int threadCounter = 0;
 
-	TextThread(ThreadParam tp, HookParam hp, std::wstring name);
-	TextThread(TextThread&) = delete;
-	TextThread& operator=(TextThread) = delete;
+	TextThread(ThreadParam tp, HookParam hp, std::optional<std::wstring> name = {});
 	~TextThread();
 
 	std::wstring GetStorage();
diff --git a/GUI/main.cpp b/GUI/main.cpp
index e64e71c..ef6bb7c 100644
--- a/GUI/main.cpp
+++ b/GUI/main.cpp
@@ -2,6 +2,7 @@
 #include "host/util.h"
 #include <sstream>
 #include <QApplication>
+#include <QDir>
 
 namespace
 {
@@ -15,8 +16,16 @@ namespace
 
 	thread_local std::wstring lastError = L"Unknown error";
 
+	__declspec(noreturn) void Terminate()
+	{
+		MessageBoxW(NULL, lastError.c_str(), L"Textractor ERROR", MB_ICONERROR);
+		std::abort();
+	}
+
 	LONG WINAPI ExceptionLogger(EXCEPTION_POINTERS* exception)
 	{
+		thread_local static auto terminateSetter = std::invoke(std::set_terminate, Terminate);
+
 		MEMORY_BASIC_INFORMATION info = {};
 		VirtualQuery(exception->ExceptionRecord->ExceptionAddress, &info, sizeof(info));
 
@@ -36,14 +45,6 @@ namespace
 		lastError = errorMsg.str();
 		return EXCEPTION_CONTINUE_SEARCH;
 	}
-
-	__declspec(noreturn) void Terminate()
-	{
-		MessageBoxW(NULL, lastError.c_str(), L"Textractor ERROR", MB_ICONERROR);
-		std::abort();
-	}
-
-	thread_local auto _ = [] { return std::set_terminate(Terminate); }();
 }
 
 int main(int argc, char *argv[])
@@ -51,9 +52,7 @@ int main(int argc, char *argv[])
 	AddVectoredExceptionHandler(FALSE, ExceptionLogger);
 	SetUnhandledExceptionFilter([](auto) -> LONG { Terminate(); });
 
-	std::wstring exe = Util::GetModuleFileName().value();
-	while (exe.back() != L'\\') exe.pop_back();
-	SetCurrentDirectoryW(exe.c_str());
+	QDir::setCurrent(QFileInfo().absolutePath());
 
 	QApplication a(argc, argv);
 	MainWindow w;
diff --git a/GUI/mainwindow.cpp b/GUI/mainwindow.cpp
index 870c7ad..a3449cb 100644
--- a/GUI/mainwindow.cpp
+++ b/GUI/mainwindow.cpp
@@ -4,6 +4,7 @@
 #include "extenwindow.h"
 #include "setdialog.h"
 #include "misc.h"
+#include "host/util.h"
 #include <QTimer>
 #include <QInputDialog>
 
@@ -35,6 +36,7 @@ MainWindow::MainWindow(QWidget *parent) :
 
 MainWindow::~MainWindow()
 {
+	Host::Shutdown();
 	settings.setValue(WINDOW, geometry());
 	settings.sync();
 	delete ui;
@@ -46,7 +48,7 @@ void MainWindow::closeEvent(QCloseEvent*)
 }
 
 
-void MainWindow::InvokeOnMainThread(std::function<void()>&& f)
+void MainWindow::InvokeOnMainThread(std::function<void()> f)
 {
 	QMetaObject::invokeMethod(this, f);
 }
@@ -56,16 +58,15 @@ void MainWindow::ProcessConnected(DWORD processId)
 	if (processId == 0) return;
 	InvokeOnMainThread([&, processId]
 	{
-		processCombo->addItem(QString::number(processId, 16).toUpper() + ": " + GetModuleName(processId));
-		QString processName = GetFullModuleName(processId);
+		QString process = QString::fromStdWString(Util::GetModuleFileName(processId).value());
+		processCombo->addItem(QString::number(processId, 16).toUpper() + ": " + QFileInfo(process).fileName());
+
 		QStringList allProcesses = QString(QAutoFile(HOOK_SAVE_FILE, QIODevice::ReadOnly)->readAll()).split("\r", QString::SkipEmptyParts);
-		for (auto hooks = allProcesses.rbegin(); hooks != allProcesses.rend(); ++hooks)
-			if (hooks->contains(processName))
-			{
-				for (auto hook : hooks->split(" , "))
-					if (auto hp = ParseCode(hook)) Host::InsertHook(processId, hp.value());
-				return;
-			}
+		// Can't use QFileInfo::absoluteFilePath since hook save file has '\\' as path separator
+		auto hookList = std::find_if(allProcesses.rbegin(), allProcesses.rend(), [&](QString hookList) { return hookList.contains(process); });
+		if (hookList != allProcesses.rend())
+			for (auto hookCode : hookList->split(" , "))
+				if (auto hp = ParseCode(hookCode)) Host::InsertHook(processId, hp.value());
 	});
 }
 
@@ -185,7 +186,7 @@ void MainWindow::on_saveButton_clicked()
 		ThreadParam tp = ParseTextThreadString(ttCombo->itemText(i));
 		if (tp.processId == GetSelectedProcessId() && !(Host::GetHookParam(tp).type & HOOK_ENGINE)) hookCodes[tp.addr] = GenerateCode(Host::GetHookParam(tp), tp.processId);
 	}
-	QString hookList = GetFullModuleName(GetSelectedProcessId());
+	QString hookList = QString::fromStdWString(Util::GetModuleFileName(GetSelectedProcessId()).value());
 	for (auto hookCode : hookCodes) hookList += " , " + hookCode;
 	QAutoFile(HOOK_SAVE_FILE, QIODevice::Append)->write((hookList + "\r\n").toUtf8());
 }
diff --git a/GUI/mainwindow.h b/GUI/mainwindow.h
index ece749f..1d94bc3 100644
--- a/GUI/mainwindow.h
+++ b/GUI/mainwindow.h
@@ -32,7 +32,7 @@ private slots:
 
 private:
 	void closeEvent(QCloseEvent*);
-	void InvokeOnMainThread(std::function<void()>&& f);
+	void InvokeOnMainThread(std::function<void()> f);
 	void ProcessConnected(DWORD processId);
 	void ProcessDisconnected(DWORD processId);
 	void ThreadAdded(TextThread* thread);
diff --git a/GUI/misc.cpp b/GUI/misc.cpp
index b074fa1..e356d2b 100644
--- a/GUI/misc.cpp
+++ b/GUI/misc.cpp
@@ -1,32 +1,16 @@
 #include "misc.h"
 #include "const.h"
+#include "host/util.h"
 #include <Psapi.h>
 #include <QTextStream>
 
-QString GetFullModuleName(DWORD processId, HMODULE module)
-{
-	HANDLE handle = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, processId);
-	wchar_t buffer[MAX_PATH] = {};
-	GetModuleFileNameExW(handle, module, buffer, MAX_PATH);
-	CloseHandle(handle);
-	return QString::fromWCharArray(buffer);
-}
-
-QString GetModuleName(DWORD processId, HMODULE module)
-{
-	QString fullName = GetFullModuleName(processId, module);
-	return fullName.remove(0, fullName.lastIndexOf("\\") + 1);
-}
-
 QMultiHash<QString, DWORD> GetAllProcesses()
 {
-	DWORD allProcessIds[0x1000];
-	DWORD spaceUsed;
+	DWORD allProcessIds[5000] = {}, spaceUsed = 0;
+	EnumProcesses(allProcessIds, sizeof(allProcessIds), &spaceUsed);
 	QMultiHash<QString, DWORD> ret;
-	if (!EnumProcesses(allProcessIds, sizeof(allProcessIds), &spaceUsed)) return ret;
 	for (int i = 0; i < spaceUsed / sizeof(DWORD); ++i)
-		if (GetModuleName(allProcessIds[i]).size())
-			ret.insert(GetModuleName(allProcessIds[i]), allProcessIds[i]);
+		if (auto processName = Util::GetModuleFileName(allProcessIds[i])) ret.insert(QFileInfo(QString::fromStdWString(processName.value())).fileName(), allProcessIds[i]);
 	return ret;
 }
 
@@ -235,19 +219,15 @@ namespace
 
 		// Attempt to make the address relative
 		if (!(hp.type & MODULE_OFFSET))
-		{
-			HANDLE processHandle;
-			if (!(processHandle = OpenProcess(PROCESS_VM_READ | PROCESS_QUERY_INFORMATION, FALSE, processId))) goto fin;
-			MEMORY_BASIC_INFORMATION info;
-			if (!VirtualQueryEx(processHandle, (LPCVOID)hp.address, &info, sizeof(info))) goto fin;
-			QString moduleName = GetModuleName(processId, (HMODULE)info.AllocationBase);
-			if (moduleName == "") goto fin;
-			hp.type |= MODULE_OFFSET;
-			hp.address -= (uint64_t)info.AllocationBase;
-			wcscpy_s<MAX_MODULE_SIZE>(hp.module, moduleName.toStdWString().c_str());
-		}
+			if (AutoHandle<> process = OpenProcess(PROCESS_VM_READ | PROCESS_QUERY_INFORMATION, FALSE, processId))
+				if (MEMORY_BASIC_INFORMATION info = {}; VirtualQueryEx(process, (LPCVOID)hp.address, &info, sizeof(info)))
+					if (auto moduleName = Util::GetModuleFileName(processId, (HMODULE)info.AllocationBase))
+					{
+						hp.type |= MODULE_OFFSET;
+						hp.address -= (uint64_t)info.AllocationBase;
+						wcscpy_s<MAX_MODULE_SIZE>(hp.module, moduleName->c_str() + moduleName->rfind(L'\\') + 1);
+					}
 
-		fin:
 		codeBuilder << "@" << hp.address;
 		if (hp.type & MODULE_OFFSET) codeBuilder << ":" << QString::fromWCharArray(hp.module);
 		if (hp.type & FUNCTION_OFFSET) codeBuilder << ":" << hp.function;
diff --git a/GUI/misc.h b/GUI/misc.h
index 7833f33..4120a3e 100644
--- a/GUI/misc.h
+++ b/GUI/misc.h
@@ -13,8 +13,6 @@ private:
 	QFile f;
 };
 
-QString GetFullModuleName(DWORD processId, HMODULE module = NULL);
-QString GetModuleName(DWORD processId, HMODULE module = NULL);
 QMultiHash<QString, DWORD> GetAllProcesses();
 std::optional<HookParam> ParseCode(QString HCode);
 QString GenerateCode(HookParam hp, DWORD processId);
diff --git a/GUI/qtcommon.h b/GUI/qtcommon.h
index 4aa443b..f48dd54 100644
--- a/GUI/qtcommon.h
+++ b/GUI/qtcommon.h
@@ -7,4 +7,5 @@
 #include <QMainWindow>
 #include <QDialog>
 #include <QFile>
+#include <QFileInfo>
 #include <QRegularExpression>