From 6472d48c1be6162a671d7203663150345df43912 Mon Sep 17 00:00:00 2001
From: adelikat <adelikat@tasvideos.org>
Date: Thu, 8 Aug 2013 12:49:02 +0000
Subject: [PATCH] Rewind Config dialog is no Chuck Norris, so don't attempt to
 divide by zero

---
 BizHawk.MultiClient/config/RewindConfig.cs | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/BizHawk.MultiClient/config/RewindConfig.cs b/BizHawk.MultiClient/config/RewindConfig.cs
index e164426ccc..4a6be6e7d4 100644
--- a/BizHawk.MultiClient/config/RewindConfig.cs
+++ b/BizHawk.MultiClient/config/RewindConfig.cs
@@ -245,10 +245,17 @@ namespace BizHawk.MultiClient
         {
             long avg_state_size = 0;
 
-            if (UseDeltaCompression.Checked)
+            if (UseDeltaCompression.Checked || StateSize == 0)
             {
 
-                avg_state_size = (long)(Global.MainForm.Rewind_Size / Global.MainForm.Rewind_Count);
+                if (Global.MainForm.Rewind_Count > 0)
+                {
+                    avg_state_size = (long)(Global.MainForm.Rewind_Size / Global.MainForm.Rewind_Count);
+                }
+                else
+                {
+                    avg_state_size = Global.Emulator.SaveStateBinary().Length;
+                }
             }
             else
             {