save-as triggers Date cannot be cast to java.lang.String

[gordon.dey@…]

Attempt to save edited gpx file (josm 1553) produces the following exception (data from 'report' window):

Java version: 1.6.0_0
Plugins: ImageWayPoint;editgpx;validator
Plugin ImageWayPoint Version: 14122
Plugin editgpx Version: 14247
Plugin validator Version: 14123

java.lang.ClassCastException: java.util.Date cannot be cast to java.lang.String

at org.openstreetmap.josm.io.GpxWriter.writeAttr(GpxWriter.java:68)
at org.openstreetmap.josm.io.GpxWriter.wayPoint(GpxWriter.java:202)
at org.openstreetmap.josm.io.GpxWriter.writeTracks(GpxWriter.java:120)
at org.openstreetmap.josm.io.GpxWriter.write(GpxWriter.java:52)
at org.openstreetmap.josm.actions.SaveActionBase.save(SaveActionBase.java:206)
at org.openstreetmap.josm.actions.SaveActionBase.save(SaveActionBase.java:142)
at org.openstreetmap.josm.actions.SaveActionBase.doSave(SaveActionBase.java:57)
at org.openstreetmap.josm.actions.SaveActionBase.actionPerformed(SaveActionBase.java:38)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2012)
at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2335)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:404)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
at javax.swing.AbstractButton.doClick(AbstractButton.java:374)
at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1688)
at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1732)
at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:289)
at java.awt.Component.processMouseEvent(Component.java:6108)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3276)
at java.awt.Component.processEvent(Component.java:5873)
at java.awt.Container.processEvent(Container.java:2105)
at java.awt.Component.dispatchEventImpl(Component.java:4469)
at java.awt.Container.dispatchEventImpl(Container.java:2163)
at java.awt.Component.dispatchEvent(Component.java:4295)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4461)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4125)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4055)
at java.awt.Container.dispatchEventImpl(Container.java:2149)
at java.awt.Window.dispatchEventImpl(Window.java:2478)
at java.awt.Component.dispatchEvent(Component.java:4295)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:604)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:275)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:200)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:190)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:185)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:177)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:138

[stoecker]

Closed as duplicate of #2359.