ERROR while scanning for plugins at

royskatt

Hello,

this problem has been reported here several times, but no one has been answered so far as I could see. For multiple plugins I get error messages like this:

 

ERROR while scanning for plugins at: file:/C:/Users/michal.meyers/.ProM641/packages/etconformance-6.4.168/ETConformance.
jar:
   in file :org.processmining.plugins.multietc.automaton.AutomatonVis
   edu/uci/ics/jung/algorithms/layout/Layout
java.lang.NoClassDefFoundError: edu/uci/ics/jung/algorithms/layout/Layout
        at java.lang.Class.getDeclaredMethods0(Native Method)
        at java.lang.Class.privateGetDeclaredMethods(Unknown Source)
        at java.lang.Class.privateGetPublicMethods(Unknown Source)
        at java.lang.Class.getMethods(Unknown Source)
        at org.processmining.framework.plugin.impl.PluginManagerImpl.isGoodPlugin(PluginManagerImpl.java:418)
        at org.processmining.framework.plugin.impl.PluginManagerImpl.loadClass(PluginManagerImpl.java:308)
        at org.processmining.framework.plugin.impl.PluginManagerImpl.scanUrl(PluginManagerImpl.java:221)
        at org.processmining.framework.plugin.impl.PluginManagerImpl.register(PluginManagerImpl.java:153)
        at org.processmining.framework.plugin.impl.PluginManagerImpl.register(PluginManagerImpl.java:133)
        at org.processmining.framework.boot.Boot.addJarsForPackage(Boot.java:279)
        at org.processmining.framework.boot.Boot.boot(Boot.java:177)
        at org.processmining.contexts.uitopia.UI.main(UI.java:96)
Caused by: java.lang.ClassNotFoundException: edu.uci.ics.jung.algorithms.layout.Layout
        at java.net.URLClassLoader$1.run(Unknown Source)
        at java.net.URLClassLoader$1.run(Unknown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)

It happened when copying the .ProM641-Folder from one Windows machine to the other (I have no internet connection on the target machine). Is it maybe because of a different java version?

The program starts but there are missing essential plugins because of that.
Could someone help me out?

Thank you very much in advance!