Please can you help with ClassNotFoundException?
Event: 87.495 Thread 0x00c34000 Exception <a ‘java/lang/ClassNotFoundException’: com/vaadin/shared/ui/ui/UIState$PushConfigurationStateBeanInfo> (0x6bcdda60) thrown at [/HUDSON3/workspace/8-2-build-glinux-arm-vfp-hflt/jdk8u72/5059.nc/ho$