From 5802178bbd2dd30cda5dcc3f02f8cb7464256bf1 Mon Sep 17 00:00:00 2001
From: mezz <tehgeek@gmail.com>
Date: Mon, 2 Mar 2015 22:53:22 -0800
Subject: [PATCH] Fix #538 Internal error when changing Catalogue page with no
 trades

---
 src/main/java/forestry/mail/gui/ContainerCatalogue.java | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/main/java/forestry/mail/gui/ContainerCatalogue.java b/src/main/java/forestry/mail/gui/ContainerCatalogue.java
index 0bd066de5..e6e4418e8 100755
--- a/src/main/java/forestry/mail/gui/ContainerCatalogue.java
+++ b/src/main/java/forestry/mail/gui/ContainerCatalogue.java
@@ -110,6 +110,9 @@ public class ContainerCatalogue extends Container implements IGuiSelectable {
 			return;
 		}
 
+		if (stations.size() == 0) {
+			return;
+		}
 		stationIndex = (stationIndex + 1) % stations.size();
 		updateTradeInfo();
 	}
@@ -120,6 +123,9 @@ public class ContainerCatalogue extends Container implements IGuiSelectable {
 			return;
 		}
 
+		if (stations.size() == 0) {
+			return;
+		}
 		stationIndex = (stationIndex - 1 + stations.size()) % stations.size();
 		updateTradeInfo();
 	}