CHESS PLUG-IN ERROR
THE FOLLOWING CONTAINS THE SET OF ERROR MSG DURING RUNTIME... AND FOLLOWED BY WHICH IS THE LINE WHICH THE ERROR POINTS
2007.05.31 12:58:24 PluginsLoader: initialization...
Exception in thread "main" java.lang.RuntimeException: java.lang.Exception: Error loading class net.sourceforge.capa.plugins.PluginInstance from a.jar
at net.sourceforge.capa.plugins.PluginsLoader.<init>(PluginsLoader.java:74)
at net.sourceforge.capa.plugins.PluginsLoader.getInstance(PluginsLoader.java:53)
at net.sourceforge.capa.Main.main(Main.java:61)
Caused by: java.lang.Exception: Error loading class net.sourceforge.capa.plugins.PluginInstance from a.jar
at net.sourceforge.capa.plugins.PluginsLoader.loadJar(PluginsLoader.java:124)
at net.sourceforge.capa.plugins.PluginsLoader.loadJar(PluginsLoader.java:90)
at net.sourceforge.capa.plugins.PluginsLoader.<init>(PluginsLoader.java:70)
... 2 more
Caused by: java.lang.LinkageError: loader (instance of net/sourceforge/capa/plugins/PluginsLoader): attempted duplicate class definition for name: "net/sourceforge/capa/plugins/PluginInstance"
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.lang.ClassLoader.defineClass(Unknown Source)
at net.sourceforge.capa.plugins.PluginsLoader.loadJar(PluginsLoader.java:116)
... 4 more
line no 61 is PluginsLoader.getInstance();//To initialize the plugin classloader
line no 53 is instance = new PluginsLoader();
line no 74 isthrow new RuntimeException(th);
as i am new to programming not able to get what exactly is the error. please help
