diff --git a/hrudelinCore b/hrudelinCore
index 8523d22dc5031077c333c1ed452f8c96d4878d9d..29a156acadc76980b65c11c33bac98ac8fae49a0 160000
--- a/hrudelinCore
+++ b/hrudelinCore
@@ -1 +1 @@
-Subproject commit 8523d22dc5031077c333c1ed452f8c96d4878d9d
+Subproject commit 29a156acadc76980b65c11c33bac98ac8fae49a0
diff --git a/hrudelin_dockwidget.py b/hrudelin_dockwidget.py
index 336fd63d4e4883a7513cfb5d49868e6387f4e436..cf948c52ae688bcdd90855878ab3e7f288f55533 100644
--- a/hrudelin_dockwidget.py
+++ b/hrudelin_dockwidget.py
@@ -20,7 +20,6 @@ from pathlib import Path
 import tempfile, configparser
 from zipfile import ZipFile
 from collections import defaultdict
-from multiprocessing import cpu_count
 import numpy as np
 from osgeo import gdal, ogr, osr
 from osgeo.gdalnumeric import *
@@ -44,6 +43,14 @@ import processing
 from hrudelin.pluginUtils import layerstools
 from hrudelin.pluginUtils.tools import isWindows, isMac, which, prepareGrassEnv
 
+from multiprocessing import cpu_count
+import multiprocessing
+# fix python bin path for dumb windows
+if isWindows:
+    path = os.path.abspath(os.path.join(sys.exec_prefix, '../../bin/pythonw3.exe'))
+    multiprocessing.set_executable(path)
+    sys.argv = [None]
+
 prepareGrassEnv()
 from hrudelin.hrudelinCore.modules.hrudelin_1_init import main as main1
 from hrudelin.hrudelinCore.modules.hrudelin_2_basins import main as main2
diff --git a/version.sh b/version.sh
index c60c3804f40f15ad590e169e910cf492c73e6a53..05a35461391326f3eaebe052c4b3c46ca1576b05 100755
--- a/version.sh
+++ b/version.sh
@@ -4,12 +4,15 @@ if [ -z $version ]; then
 	version=`cat version.txt`
 fi
 
-rm -rf /tmp/irip
-mkdir /tmp/irip
-cp -r * /tmp/irip/
+rm -f hrudelin*.zip
+rm -rf /tmp/hrudelin
+mkdir /tmp/hrudelin
+cp -r * /tmp/hrudelin/
 cd /tmp
-find irip -name "*.pyc" -delete
-sed -i 's/^version=.*/version='$version'/' irip/metadata.txt
-zip -q -r irip-$version.zip irip
+rm -f hrudelin/*.sh hrudelin/version.txt
+find hrudelin -name "*.pyc" -delete
+find hrudelin -name "__pycache__" -delete
+sed -i 's/^version=.*/version='$version'/' hrudelin/metadata.txt
+zip -q -r hrudelin-$version.zip hrudelin
 cd -
-mv /tmp/irip-$version.zip .
+mv /tmp/hrudelin-$version.zip .