Compatibility with 64 bits registry access

https://support.microsoft.com/en-us/help/948698/you-cannot-use-the-reg-exe-utility-to-access-64-bit-registry-keys-on-a

Util/BuildTools/Package.bat

@@ -63,7 +63,7 @@ rem
 set KEY_NAME="HKEY_LOCAL_MACHINE\SOFTWARE\EpicGames\Unreal Engine\%UE_VERSION%"
 set VALUE_NAME=InstalledDirectory
 
-for /f "usebackq tokens=3*" %%A in (`reg query %KEY_NAME%  /v %VALUE_NAME%`) do set UE4_ROOT=%%A%%B
+for /f "usebackq tokens=3*" %%A in (`reg query %KEY_NAME% /v %VALUE_NAME% /reg:64`) do set UE4_ROOT=%%A %%B
 if not defined UE4_ROOT goto error_unreal_no_found
 
 rem Set packaging paths

Util/BuildTools/Setup.bat

@@ -62,7 +62,7 @@ echo %FILE_N% Install directory:  "%INSTALLATION_DIR%"
 
 if not exist "%CONTENT_DIR%" (
     echo %FILE_N% Creating "%CONTENT_DIR%" folder...
-    mkdir "%CONTENT_DIR%""
+    mkdir "%CONTENT_DIR%"
 )
 
 if not exist "%INSTALLATION_DIR%" (