From 126678779c396125cea847e52d06ae4b3ef03d92 Mon Sep 17 00:00:00 2001
From: emkael <emkael@tlen.pl>
Date: Mon, 23 May 2016 22:21:05 +0200
Subject:  * PBN temp file checks before save

---
 PBNFile.cs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/PBNFile.cs b/PBNFile.cs
index bec7fcd..5526623 100644
--- a/PBNFile.cs
+++ b/PBNFile.cs
@@ -58,6 +58,10 @@ namespace BCDD
 
         public void Save()
         {
+            if (this.outputFile == null)
+            {
+                throw new IOException("No boards written to PBN file, unable to save it.");
+            }
             this.outputFile.Flush();
             this.outputFile.Close();
             File.Delete(this.filename);
-- 
cgit v1.2.3