diff --git a/RUN_THIS.py b/RUN_THIS.py
old mode 100644
new mode 100755
diff --git a/package_release_build.py b/package_release_build.py
old mode 100644
new mode 100755
index 7024e870e4..f5ae4e12e4
--- a/package_release_build.py
+++ b/package_release_build.py
@@ -22,8 +22,9 @@ except ImportError:
 
 def main():
     # Wipe out old build directory.
-    print(Fore.BLUE + Style.DIM + "Clearing old build artifacts..." + Style.RESET_ALL)
-    shutil.rmtree("bin")
+    if os.path.exists("bin"):
+        print(Fore.BLUE + Style.DIM + "Clearing old build artifacts..." + Style.RESET_ALL)
+        shutil.rmtree("bin")
 
     build_windows()