diff --git a/SkinInstaller/Application.cpp b/SkinInstaller/Application.cpp
index 564ab8f7..b0e5751e 100644
--- a/SkinInstaller/Application.cpp
+++ b/SkinInstaller/Application.cpp
@@ -293,3 +293,37 @@ OSPLATFORM GetOSPlatform()
 
 	return OSPLATFORM_UNKNOWN;
 }
+
+std::string ConvertToAscii(LPCTSTR str)
+{
+	std::string szAscii;
+
+	if (str && *str)
+	{
+		int strLen = (int)wcslen(str);
+		int bufLen = WideCharToMultiByte(CP_ACP, 0, str, strLen, NULL, 0, NULL, NULL);
+		if (bufLen > 0)
+		{
+			szAscii.resize(bufLen);
+			WideCharToMultiByte(CP_ACP, 0, str, strLen, &szAscii[0], bufLen, NULL, NULL);
+		}
+	}
+	return szAscii;
+}
+
+std::wstring ConvertToWide(LPCSTR str)
+{
+	std::wstring szWide;
+
+	if (str && *str)
+	{
+		int strLen = (int)strlen(str);
+		int bufLen = MultiByteToWideChar(CP_ACP, 0, str, strLen, NULL, 0);
+		if (bufLen > 0)
+		{
+			szWide.resize(bufLen);
+			MultiByteToWideChar(CP_ACP, 0, str, strLen, &szWide[0], bufLen);
+		}
+	}
+	return szWide;
+}
\ No newline at end of file
diff --git a/SkinInstaller/Application.h b/SkinInstaller/Application.h
index 85efad5c..d07e9e72 100644
--- a/SkinInstaller/Application.h
+++ b/SkinInstaller/Application.h
@@ -53,5 +53,7 @@ OSPLATFORM GetOSPlatform();
 
 bool IsRunning(const WCHAR* name, HANDLE* hMutex);
 bool CopyFiles(const std::wstring& strFrom, const std::wstring& strTo, bool bMove = false);
+std::string ConvertToAscii(LPCTSTR str);
+std::wstring ConvertToWide(LPCSTR str);
 
 #endif
diff --git a/SkinInstaller/DialogInstall.cpp b/SkinInstaller/DialogInstall.cpp
index a5b785e1..2403c835 100644
--- a/SkinInstaller/DialogInstall.cpp
+++ b/SkinInstaller/DialogInstall.cpp
@@ -21,7 +21,6 @@
 #include "DialogInstall.h"
 #include "../Library/pcre-8.10/config.h"
 #include "../Library/pcre-8.10/pcre.h"
-#include "../Common/StringUtil.h"
 #include "resource.h"
 #include "../Version.h"
 
@@ -389,7 +388,7 @@ bool CDialogInstall::ReadPackage()
 		return false;
 	}
 
-	m_PackageUnzFile = unzOpen(StringUtil::NarrowUTF8(fileName).c_str());
+	m_PackageUnzFile = unzOpen(ConvertToAscii(fileName).c_str());
 	if (!m_PackageUnzFile)
 	{
 		return false;
@@ -410,7 +409,7 @@ bool CDialogInstall::ReadPackage()
 		unz_file_info ufi;
 		if (unzGetCurrentFileInfo(m_PackageUnzFile, &ufi, cBuffer, MAX_PATH, NULL, 0, NULL, 0) == UNZ_OK)
 		{
-			MultiByteToWideChar(CP_UTF8, 0, cBuffer, strlen(cBuffer) + 1, buffer, MAX_PATH);
+			MultiByteToWideChar(CP_ACP, 0, cBuffer, strlen(cBuffer) + 1, buffer, MAX_PATH);
 			while (WCHAR* pos = wcschr(buffer, L'/')) *pos = L'\\';
 			return true;
 		}
@@ -718,7 +717,7 @@ bool CDialogInstall::InstallPackage()
 		unz_file_info ufi;
 		if (unzGetCurrentFileInfo(m_PackageUnzFile, &ufi, cBuffer, MAX_PATH, NULL, 0, NULL, 0) == UNZ_OK)
 		{
-			MultiByteToWideChar(CP_UTF8, 0, cBuffer, strlen(cBuffer) + 1, buffer, MAX_PATH);
+			MultiByteToWideChar(CP_ACP, 0, cBuffer, strlen(cBuffer) + 1, buffer, MAX_PATH);
 			while (WCHAR* pos = wcschr(buffer, L'/')) *pos = L'\\';
 			return true;
 		}
diff --git a/SkinInstaller/DialogPackage.cpp b/SkinInstaller/DialogPackage.cpp
index 9ce05212..e40d8ea4 100644
--- a/SkinInstaller/DialogPackage.cpp
+++ b/SkinInstaller/DialogPackage.cpp
@@ -20,7 +20,6 @@
 #include "Application.h"
 #include "DialogPackage.h"
 #include "DialogInstall.h"
-#include "../Common/StringUtil.h"
 #include "resource.h"
 #include "../Version.h"
 
@@ -265,7 +264,7 @@ bool CDialogPackage::CreatePackage()
 	WritePrivateProfileString(L"rmskin", L"MinimumWindows", m_MinimumWindows.c_str(), tempFile);
 
 	// Create archive and add options file and header bitmap
-	m_ZipFile = zipOpen(StringUtil::NarrowUTF8(m_TargetFile).c_str(), APPEND_STATUS_CREATE);
+	m_ZipFile = zipOpen(ConvertToAscii(m_TargetFile.c_str()).c_str(), APPEND_STATUS_CREATE);
 
 	auto cleanup = [&]()->bool
 	{
@@ -380,16 +379,16 @@ unsigned __stdcall CDialogPackage::PackagerThreadProc(void* pParam)
 
 bool CDialogPackage::AddFileToPackage(const WCHAR* filePath, const WCHAR* zipPath)
 {
-	std::string zipPathUTF8 = StringUtil::NarrowUTF8(zipPath);
-	for (int i = 0, isize = zipPathUTF8.length(); i < isize; ++i)
+	std::string zipPathAscii = ConvertToAscii(zipPath);
+	for (int i = 0, isize = zipPathAscii.length(); i < isize; ++i)
 	{
-		if (zipPathUTF8[i] == '\\')
+		if (zipPathAscii[i] == '\\')
 		{
-			zipPathUTF8[i] = '/';
+			zipPathAscii[i] = '/';
 		}
 	}
 
-	int open = zipOpenNewFileInZip(m_ZipFile, zipPathUTF8.c_str(), NULL, NULL, 0, NULL, 0, NULL, Z_DEFLATED, Z_DEFAULT_COMPRESSION);
+	int open = zipOpenNewFileInZip(m_ZipFile, zipPathAscii.c_str(), NULL, NULL, 0, NULL, 0, NULL, Z_DEFLATED, Z_DEFAULT_COMPRESSION);
 	if (open != ZIP_OK)
 	{
 		return false;
@@ -744,7 +743,7 @@ INT_PTR CALLBACK CDialogPackage::SelectPluginDlgProc(HWND hWnd, UINT uMsg, WPARA
 
 				bool x32 = LOWORD(wParam) == IDC_PACKAGESELECTPLUGIN_32BITBROWSE_BUTTON;
 
-				LOADED_IMAGE* loadedImage = ImageLoad(StringUtil::NarrowUTF8(buffer).c_str(), NULL);
+				LOADED_IMAGE* loadedImage = ImageLoad(ConvertToAscii(buffer).c_str(), NULL);
 				if (loadedImage)
 				{
 					WORD machine = loadedImage->FileHeader->FileHeader.Machine;
diff --git a/SkinInstaller/SkinInstaller.vcxproj b/SkinInstaller/SkinInstaller.vcxproj
index a60ca291..80f2aae3 100644
--- a/SkinInstaller/SkinInstaller.vcxproj
+++ b/SkinInstaller/SkinInstaller.vcxproj
@@ -134,7 +134,6 @@
     </Manifest>
   </ItemDefinitionGroup>
   <ItemGroup>
-    <ClCompile Include="..\Common\StringUtil.cpp" />
     <ClCompile Include="..\Library\Dialog.cpp" />
     <ClCompile Include="Application.cpp" />
     <ClCompile Include="DialogInstall.cpp" />
@@ -171,7 +170,6 @@
     </ResourceCompile>
   </ItemGroup>
   <ItemGroup>
-    <ClInclude Include="..\Common\StringUtil.h" />
     <ClInclude Include="..\Library\Dialog.h" />
     <ClInclude Include="Application.h" />
     <ClInclude Include="DialogInstall.h" />
diff --git a/SkinInstaller/SkinInstaller.vcxproj.filters b/SkinInstaller/SkinInstaller.vcxproj.filters
index dc601432..b830088f 100644
--- a/SkinInstaller/SkinInstaller.vcxproj.filters
+++ b/SkinInstaller/SkinInstaller.vcxproj.filters
@@ -22,9 +22,6 @@
     <Filter Include="pcre">
       <UniqueIdentifier>{73cc243e-5b60-4fbc-ae48-069c6decc4ed}</UniqueIdentifier>
     </Filter>
-    <Filter Include="Common">
-      <UniqueIdentifier>{65d4ccc5-15bd-4268-a539-ebf090e28d5d}</UniqueIdentifier>
-    </Filter>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="Application.cpp">
@@ -90,9 +87,6 @@
     <ClCompile Include="DialogPackage.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
-    <ClCompile Include="..\Common\StringUtil.cpp">
-      <Filter>Common</Filter>
-    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="resource.h">
@@ -161,9 +155,6 @@
     <ClInclude Include="DialogPackage.h">
       <Filter>Header Files</Filter>
     </ClInclude>
-    <ClInclude Include="..\Common\StringUtil.h">
-      <Filter>Common</Filter>
-    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <None Include="Res\SkinInstaller.ico">