r2906 broke validator

[Daeron]

r2906 broke the validator plugin:

Plugins: PicLayer,lakewalker,measurement,remotecontrol,validator,wmsplugin
Plugin wmsplugin Version: 19626
Plugin PicLayer Version: 19467
Plugin remotecontrol Version: 19471
Plugin validator Version: 19616
Plugin lakewalker Version: 19624
Plugin measurement Version: 19450

java.lang.NoSuchMethodError: org.openstreetmap.josm.data.osm.OsmPrimitive.entrySet()Ljava/util/Collection;
	at org.openstreetmap.josm.plugins.validator.tests.NameMismatch.check(NameMismatch.java:58)
	at org.openstreetmap.josm.plugins.validator.tests.NameMismatch.visit(NameMismatch.java:107)
	at org.openstreetmap.josm.plugins.validator.ValidateUploadHook.checkUpload(ValidateUploadHook.java:60)
	at org.openstreetmap.josm.actions.UploadAction.checkPreUploadConditions(UploadAction.java:118)
	at org.openstreetmap.josm.actions.UploadAction.uploadData(UploadAction.java:134)
	at org.openstreetmap.josm.actions.UploadAction.actionPerformed(UploadAction.java:167)
	at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
	at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
	at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
	at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
	at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236)
	at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:272)
	at java.awt.Component.processMouseEvent(Component.java:6263)
	at javax.swing.JComponent.processMouseEvent(JComponent.java:3255)
	at java.awt.Component.processEvent(Component.java:6028)
	at java.awt.Container.processEvent(Container.java:2041)
	at java.awt.Component.dispatchEventImpl(Component.java:4630)
	at java.awt.Container.dispatchEventImpl(Container.java:2099)
	at java.awt.Component.dispatchEvent(Component.java:4460)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4574)
	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4238)
	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4168)
	at java.awt.Container.dispatchEventImpl(Container.java:2085)
	at java.awt.Window.dispatchEventImpl(Window.java:2475)
	at java.awt.Component.dispatchEvent(Component.java:4460)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)

[malenki]

Imo a blocker. After the error appeared and validator is unloaded, upload still is impossible since more errors occur.

[jttt]

Closed as duplicate of #4455.