diff --git a/README.md b/README.md
index 38ab62e..7759c22 100644
--- a/README.md
+++ b/README.md
@@ -39,7 +39,7 @@ Product installation failed.
 Use a compatible Mac or select a different build compatible with your current hardware and try again. You may also have success running the script in a VM; the InstallationCheck script in versions of the macOS installer to date skips the checks (and returns success) when run on a VM. 
 
 ##### Important note for Catalina+
-Catalina privacy protections might interfere with the operation of this tool if you run it from ~/Desktop, ~/Documents, ~/Downloads or other directories protected in Catalina. Consider using /Users/Shared (or subdirectory) as the "working space" for this tool.
+macOS privacy protections might interfere with the operation of this tool if you run it from ~/Desktop, ~/Documents, ~/Downloads or other directories protected in macOS Catalina or later. Consider using /Users/Shared (or subdirectory) as the "working space" for this tool.
 
 
 ##### Alternate implementations
diff --git a/installinstallmacos.py b/installinstallmacos.py
index 46fc413..7ac8d44 100755
--- a/installinstallmacos.py
+++ b/installinstallmacos.py
@@ -66,6 +66,15 @@
     '21': 'https://swscan.apple.com/content/catalogs/others/'
           'index-12-10.16-10.15-10.14-10.13-10.12-10.11-10.10-10.9'
           '-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog',
+    '22': 'https://swscan.apple.com/content/catalogs/others/'
+          'index-13-12-10.16-10.15-10.14-10.13-10.12-10.11-10.10-10.9'
+          '-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog',
+    '23': 'https://swscan.apple.com/content/catalogs/others/'
+          'index-14-13-12-10.16-10.15-10.14-10.13-10.12-10.11-10.10-10.9'
+          '-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog',
+    '24': 'https://swscan.apple.com/content/catalogs/others/'
+          'index-15-14-13-12-10.16-10.15-10.14-10.13-10.12-10.11-10.10-10.9'
+          '-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog'
 }
 
 SEED_CATALOGS_PLIST = (
@@ -634,7 +643,8 @@ def main():
             if installer_app:
                 print("Adding seeding program %s extended attribute to app"
                       % seeding_program)
-                xattr.setxattr(installer_app, 'SeedProgram', seeding_program)
+                xattr.setxattr(installer_app, 'SeedProgram',
+                               seeding_program.encode("UTF-8"))
         print('Product downloaded and installed to %s' % sparse_diskimage_path)
         if args.raw:
             unmountdmg(mountpoint)
diff --git a/munki_bundle_pkg_finder.py b/munki_bundle_pkg_finder.py
new file mode 100755
index 0000000..3538774
--- /dev/null
+++ b/munki_bundle_pkg_finder.py
@@ -0,0 +1,62 @@
+#!/usr/local/munki/munki-python
+
+import os
+import plistlib
+import sys
+
+sys.path.append("/usr/local/munki")
+
+from munkilib import dmgutils
+from munkilib import pkgutils
+
+if len(sys.argv) != 2:
+    print('Need exactly one parameter: path to a munki repo!', file=sys.stderr)
+    sys.exit(-1)
+
+repo_path = sys.argv[1]
+
+all_catalog = os.path.join(repo_path, "catalogs/all")
+
+with open(all_catalog, mode="rb") as FILE:
+    all_items = plistlib.load(FILE)
+
+dmg_items = [{"name": item["name"],
+              "version": item["version"],
+              "location": item["installer_item_location"],
+              "package_path": item.get("package_path", "")} 
+             for item in all_items
+             if item.get("installer_item_location", "").endswith(".dmg") and  
+             item.get("installer_type") is None]
+
+items_with_bundle_style_pkgs = []
+for item in dmg_items:
+    full_path = os.path.join(repo_path, "pkgs", item["location"])
+    print("Checking %s..." % full_path)
+    mountpoints = dmgutils.mountdmg(full_path)
+    if mountpoints:
+        pkg_path = item["package_path"]
+        if pkg_path:
+            itempath = os.path.join(mountpoints[0], pkg_path)
+            if os.path.isdir(itempath):
+                print("***** %s--%s has a bundle-style pkg"
+                      % (item["name"], item["version"]))
+                items_with_bundle_style_pkgs.append(item)
+        else:
+            for file_item in os.listdir(mountpoints[0]):
+                if pkgutils.hasValidInstallerItemExt(file_item):
+                    itempath = os.path.join(mountpoints[0], file_item)
+                    if os.path.isdir(itempath):
+                        print("***** %s--%s has a bundle-style pkg" 
+                              % (item["name"], item["version"]))
+                        items_with_bundle_style_pkgs.append(item)
+                        break
+        dmgutils.unmountdmg(mountpoints[0])
+    else:
+        print("No filesystems mounted from %s" % full_path)
+        continue
+
+print("Found %s items with bundle-style pkgs."
+      % len(items_with_bundle_style_pkgs))
+for item in sorted(items_with_bundle_style_pkgs, key=lambda d: d["name"]):
+    print("%s--%s"% (item["name"], item["version"]))
+    print("    %s" % item["location"])