From 908a45fee2e214fa7338781ce7e7fa9ea7fe88c1 Mon Sep 17 00:00:00 2001
From: Simon Rettberg
Date: Wed, 27 Feb 2019 15:21:46 +0100
Subject: [client] Fix array out of bounds with old servers

---
 .../java/org/openslx/dozmod/gui/window/LectureDetailsWindow.java     | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/dozentenmodul/src/main/java/org/openslx/dozmod/gui/window/LectureDetailsWindow.java b/dozentenmodul/src/main/java/org/openslx/dozmod/gui/window/LectureDetailsWindow.java
index 8924ed97..fc1c375e 100644
--- a/dozentenmodul/src/main/java/org/openslx/dozmod/gui/window/LectureDetailsWindow.java
+++ b/dozentenmodul/src/main/java/org/openslx/dozmod/gui/window/LectureDetailsWindow.java
@@ -629,7 +629,10 @@ public class LectureDetailsWindow extends LectureDetailsWindowLayout implements
 	}
 	
 	private void setTabEnabled(JPanel tab, boolean editable) {
-		pnlTabs.setEnabledAt(pnlTabs.indexOfComponent(tab), editable);
+		int index = pnlTabs.indexOfComponent(tab);
+		if (index == -1) // Check if tab exists -- we don't add some, depending on server version
+			return;
+		pnlTabs.setEnabledAt(index, editable);
 	}
 
 	/**
-- 
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