From 2297dfbe7d63d5d329ad8b5da6d807094ae683f7 Mon Sep 17 00:00:00 2001
From: Michael Jumper <mjumper@apache.org>
Date: Tue, 22 Mar 2016 16:30:04 -0700
Subject: [PATCH] GUACAMOLE-1: Ensure any LinkageErrors thrown by
 Class.forName() for an extension do not result in the entire startup process
 aborting.

---
 .../main/java/org/apache/guacamole/extension/Extension.java    | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/guacamole/src/main/java/org/apache/guacamole/extension/Extension.java b/guacamole/src/main/java/org/apache/guacamole/extension/Extension.java
index 7ac0563c5..f84292490 100644
--- a/guacamole/src/main/java/org/apache/guacamole/extension/Extension.java
+++ b/guacamole/src/main/java/org/apache/guacamole/extension/Extension.java
@@ -230,6 +230,9 @@ public class Extension {
         catch (ClassNotFoundException e) {
             throw new GuacamoleException("Authentication provider class not found.", e);
         }
+        catch (LinkageError e) {
+            throw new GuacamoleException("Authentication provider class cannot be loaded (wrong version of API?).", e);
+        }
 
     }