diff --git a/Poke-A-Bird.bat b/Poke-A-Bird.bat
index 9a002e2..98bee46 100644
--- a/Poke-A-Bird.bat
+++ b/Poke-A-Bird.bat
@@ -1,7 +1,8 @@
-REM supports poke-a-bird_prerequisites_0.2 and above
 @echo off
 
 setlocal
-PATH=%PATH%;%LOCALAPPDATA%\Programs\Python\Python37-32\;%LOCALAPPDATA%\Programs\Python\Python37-32\Scripts
+set PATH=%LOCALAPPDATA%\Programs\Python\Python37-32\;%LOCALAPPDATA%\Programs\Python\Python37-32\Scripts
+set PYTHONHOME=
+set PYTHONPATH=
 python.exe .\Poke-A-Bird.py
 endlocal
\ No newline at end of file
diff --git a/Poke-A-Bird.py b/Poke-A-Bird.py
index dcd1d84..7f22bb0 100644
--- a/Poke-A-Bird.py
+++ b/Poke-A-Bird.py
@@ -39,7 +39,6 @@
 import time
 import PIL
 from PIL import Image
-from pandas import to_datetime
 from Pmw import Balloon
 
 __version__ = '0.4'
diff --git a/prerequisites/bin/install_packages.bat b/prerequisites/bin/install_packages.bat
index d936e07..a1ba1c9 100644
--- a/prerequisites/bin/install_packages.bat
+++ b/prerequisites/bin/install_packages.bat
@@ -1,7 +1,9 @@
 @echo off
 
 setlocal
-PATH=%PATH%;%LOCALAPPDATA%\Programs\Python\Python37-32\;%LOCALAPPDATA%\Programs\Python\Python37-32\Scripts
+set PATH=%LOCALAPPDATA%\Programs\Python\Python37-32\;%LOCALAPPDATA%\Programs\Python\Python37-32\Scripts
+set PYTHONHOME=
+set PYTHONPATH=
 pip3 -q --disable-pip-version-check install %1\Pillow-5.3.0-cp37-cp37m-win32.whl
 pip3 -q --disable-pip-version-check install %1\python-vlc-3.0.4106.tar.gz
 pip3 -q --disable-pip-version-check install %1\pyttk-0.3.2.tar.gz
diff --git a/prerequisites/installer.iss b/prerequisites/installer.iss
index 68fc465..ed7c27f 100644
--- a/prerequisites/installer.iss
+++ b/prerequisites/installer.iss
@@ -1,5 +1,5 @@
 #define MyAppName "Poke-A-Bird Prerequisites"
-#define MyAppVersion "0.4"
+#define MyAppVersion "0.5"
 #define MyAppPublisher "Elad Yacovi and Nerya Meshulam, Tel Aviv University"
 #define MyAppURL "https://github.com/nerya21/Poke-A-Bird"
 
@@ -7,7 +7,7 @@
 ; NOTE: The value of AppId uniquely identifies this application.
 ; Do not use the same AppId value in installers for other applications.
 ; (To generate a new GUID, click Tools | Generate GUID inside the IDE.)
-AppId={{11DC48E1-8608-4767-BD8C-088F72C18D37}}
+AppId={{38E0C05C-2A59-4D95-BE8B-7C307C1A777C}}
 AppName={#MyAppName}
 AppVersion={#MyAppVersion}
 ;AppVerName={#MyAppName} {#MyAppVersion}