From ffb68adb62090d1f2fadceaabb188fa3fdce8c17 Mon Sep 17 00:00:00 2001
From: clifford <clifford@b57f626f-c46c-0410-a088-ec61d464b74c>
Date: Sat, 2 Jan 2010 08:45:24 +0000
Subject: [PATCH] Clifford Wolf: 	Fixed STL export

git-svn-id: http://svn.clifford.at/openscad/trunk@192 b57f626f-c46c-0410-a088-ec61d464b74c
---
 mainwin.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mainwin.cc b/mainwin.cc
index 3f875419..8a35b8e1 100644
--- a/mainwin.cc
+++ b/mainwin.cc
@@ -1018,7 +1018,7 @@ void MainWindow::actionExportSTLorOFF(bool)
 		return;
 	}
 
-	if (root_N->p3.is_simple()) {
+	if (!root_N->p3.is_simple()) {
 		PRINT("Object isn't a valid 2-manifold! Modify your design..");
 		current_win = NULL;
 		return;