to reproduce follow : Menu -> Layer -> Add -> DataStore (in "Add Data"-Wizard) -> Shapefile / Directory of spatial files (shapefiles))
java.lang.NullPointerException
	at net.refractions.udig.catalog.internal.shp.ShpServiceExtension.createService(ShpServiceExtension.java:66)
	at net.refractions.udig.catalog.internal.ServiceFactoryImpl.createService(ServiceFactoryImpl.java:239)
	at net.refractions.udig.catalog.ui.workflow.EndConnectionState.constructServices(EndConnectionState.java:258)
	at net.refractions.udig.catalog.ui.AbstractUDIGImportPage$1.run(AbstractUDIGImportPage.java:130)
	at net.refractions.udig.ui.PlatformGIS$1.call(PlatformGIS.java:111)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:662)
Thanks