diff --git a/scripts/pyinstaller/build.sh b/scripts/pyinstaller/build.sh
index 88186e26..4871effd 100644
--- a/scripts/pyinstaller/build.sh
+++ b/scripts/pyinstaller/build.sh
@@ -23,10 +23,16 @@ python copyparty-sfx.py --version
 rm -rf mods; mkdir mods
 cp -pR $TEMP/pe-copyparty/copyparty/ $TEMP/pe-copyparty/{ftp,j2}/* mods/
 
+af() { awk "$1" <$2 >tf; mv tf "$2"; }
+
 rm -rf mods/magic/
-grep -lR 'import multiprocessing' | while read x; do
-    sed -ri 's/import multiprocessing/import fgsfds/' $x
-done
+
+sed -ri /pickle/d mods/jinja2/_compat.py
+sed -ri '/(bccache|PackageLoader)/d' mods/jinja2/__init__.py
+af '/^class/{s=0}/^class PackageLoader/{s=1}!s' mods/jinja2/loaders.py
+
+sed -ri /fork_process/d mods/pyftpdlib/servers.py
+af '/^class _Base/{s=1}!s' mods/pyftpdlib/authorizers.py
 
 read a b c d _ < <(
     grep -E '^VERSION =' mods/copyparty/__version__.py |
@@ -37,6 +43,18 @@ sed -r 's/1,2,3,0/'$a,$b,$c,$d'/;s/1\.2\.3/'$a.$b.$c/ <loader.rc >loader.rc2
 
 $APPDATA/python/python37/scripts/pyinstaller \
     -y --clean -p mods --upx-dir=. \
+    --exclude-module copyparty.broker_mp \
+    --exclude-module copyparty.broker_mpw \
+    --exclude-module curses \
+    --exclude-module ctypes.macholib \
+    --exclude-module multiprocessing \
+    --exclude-module pdb \
+    --exclude-module pickle \
+    --exclude-module pyftpdlib.prefork \
+    --exclude-module urllib.request \
+    --exclude-module urllib.response \
+    --exclude-module urllib.robotparser \
+    --exclude-module zipfile \
     --version-file loader.rc2 -i loader.ico -n copyparty -c -F loader.py \
     --add-data 'mods/copyparty/res;copyparty/res' \
     --add-data 'mods/copyparty/web;copyparty/web'
diff --git a/scripts/pyinstaller/loader.py b/scripts/pyinstaller/loader.py
index e9da22f9..86669dbc 100644
--- a/scripts/pyinstaller/loader.py
+++ b/scripts/pyinstaller/loader.py
@@ -17,10 +17,23 @@ import re
 import os
 import sys
 import shutil
+import traceback
 import subprocess as sp
 
 
-def meicln(mod, pids):
+def confirm(rv):
+    print()
+    print("retcode", rv if rv else traceback.format_exc())
+    print("*** hit enter to exit ***")
+    try:
+        input()
+    except:
+        pass
+
+    sys.exit(rv or 1)
+
+
+def meicln(mod):
     pdir, mine = os.path.split(mod)
     dirs = os.listdir(pdir)
     dirs = [x for x in dirs if x.startswith("_MEI") and x != mine]
@@ -61,7 +74,7 @@ def meichk():
 
     mod = os.path.dirname(os.path.realpath(__file__))
     if os.path.basename(mod).startswith("_MEI") and len(pids) == 2:
-        meicln(mod, pids)
+        meicln(mod)
 
 
 meichk()
@@ -69,4 +82,13 @@ meichk()
 
 from copyparty.__main__ import main
 
-main()
+try:
+    main()
+except SystemExit as ex:
+    c = ex.code
+    if c not in [0, -15]:
+        confirm(ex.code)
+except KeyboardInterrupt:
+    pass
+except:
+    confirm(0)