Error in clover plugin during startup in IntelliJ

com/atlassian/clover/idea/coverage/monitor/ProcessExitDatabaseMonitor
java.lang.NoClassDefFoundError: com/atlassian/clover/idea/coverage/monitor/ProcessExitDatabaseMonitor
at com.atlassian.clover.idea.ProjectPlugin.projectPostStartup(ProjectPlugin.java:156)
at com.atlassian.clover.idea.ProjectPlugin$1.run(ProjectPlugin.java:87)
at com.intellij.ide.startup.impl.StartupManagerImpl.b(StartupManagerImpl.java:342)
at com.intellij.ide.startup.impl.StartupManagerImpl.access$700(StartupManagerImpl.java:58)
at com.intellij.ide.startup.impl.StartupManagerImpl$3.run(StartupManagerImpl.java:165)
at com.intellij.openapi.project.DumbServiceImpl.runWhenSmart(DumbServiceImpl.java:150)
at com.intellij.ide.startup.impl.StartupManagerImpl.a(StartupManagerImpl.java:162)
at com.intellij.ide.startup.impl.StartupManagerImpl.access$1000(StartupManagerImpl.java:58)
at com.intellij.ide.startup.impl.StartupManagerImpl$4.run(StartupManagerImpl.java:196)
at com.intellij.openapi.project.DumbServiceImpl.a(DumbServiceImpl.java:318)
at com.intellij.openapi.project.DumbServiceImpl.access$1100(DumbServiceImpl.java:52)
at com.intellij.openapi.project.DumbServiceImpl$10.run(DumbServiceImpl.java:503)
at com.intellij.openapi.application.impl.LaterInvocator$1.run(LaterInvocator.java:158)
at com.intellij.openapi.application.impl.LaterInvocator$FlushQueue.a(LaterInvocator.java:337)
at com.intellij.openapi.application.impl.LaterInvocator$FlushQueue.run(LaterInvocator.java:321)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:749)
at java.awt.EventQueue.access$500(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:702)
at java.awt.EventQueue$3.run(EventQueue.java:696)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:719)
at com.intellij.ide.IdeEventQueue.b(IdeEventQueue.java:861)
at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:649)
at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:380)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)