diff --git a/build.bat b/build.bat
index 398a580..d337cea 100644
--- a/build.bat
+++ b/build.bat
@@ -1,5 +1,8 @@
 
-pyinstaller extract_models.spec
-pyinstaller pack_player.spec
+py -3.6-32 -m PyInstaller extract_models.spec
+py -3.6-32 -m PyInstaller pack_player.spec
+py -3.6-32 build.py
 
-py -3 build.py
+py -3.6-64 -m PyInstaller extract_models.spec
+py -3.6-64 -m PyInstaller pack_player.spec
+py -3.6-64 build.py
diff --git a/build.py b/build.py
index 9492b2f..3b7a548 100644
--- a/build.py
+++ b/build.py
@@ -1,9 +1,32 @@
 
+import os
 from zipfile import ZipFile
 
-with ZipFile("./dist/WW_Model_Helpers.zip", "w") as zip:
-  zip.write("./dist/extract_models.exe", arcname="extract_models.exe")
-  zip.write("./dist/pack_player.exe", arcname="pack_player.exe")
+with open("version.txt", "r") as f:
+  version_number = f.read().strip()
+
+base_zip_name = "WW Model Helpers"
+base_zip_name = base_zip_name + " " + version_number
+
+import struct
+if (struct.calcsize("P") * 8) == 64:
+  bits_number = "_64bit"
+else:
+  bits_number = "_32bit"
+base_zip_name += bits_number
+
+zip_name = base_zip_name.replace(" ", "_") + ".zip"
+
+extract_models_exe_path = "./dist/extract_models.exe"
+if not os.path.isfile(extract_models_exe_path):
+  raise Exception("Executable not found: %s" % exe_path)
+pack_player_exe_path = "./dist/pack_player.exe"
+if not os.path.isfile(pack_player_exe_path):
+  raise Exception("Executable not found: %s" % exe_path)
+
+with ZipFile("./dist/" + zip_name, "w") as zip:
+  zip.write(extract_models_exe_path, arcname="extract_models.exe")
+  zip.write(pack_player_exe_path, arcname="pack_player.exe")
   
   zip.write("README.md")
   zip.write("generate_previews_README.md")
diff --git a/version.txt b/version.txt
new file mode 100644
index 0000000..e2cac26
--- /dev/null
+++ b/version.txt
@@ -0,0 +1 @@
+1.2.3
\ No newline at end of file