diff --git a/cq_editor/__main__.py b/cq_editor/__main__.py
index 0fc8f70..7a37e95 100644
--- a/cq_editor/__main__.py
+++ b/cq_editor/__main__.py
@@ -1,8 +1,19 @@
 import sys
+import os
+import asyncio
 import argparse
+import faulthandler
 
 from PyQt5.QtWidgets import QApplication
 
+faulthandler.enable()
+
+if 'CASROOT' in os.environ:
+    del os.environ['CASROOT']
+
+if sys.platform == 'win32':
+    asyncio.set_event_loop_policy(asyncio.WindowsSelectorEventLoopPolicy())
+
 NAME = 'CQ-editor'
 
 #need to initialize QApp here, otherewise svg icons do not work on windows