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java.lang.NullPointerException: 	at java.lang.String.(Unknown Source)	at net.adrianromero.tpv.admin.RolesView.writeValue(Unknown Source)	at net.adrianromero.data.user.EditorRecordBasic.writeValueEdit(Unknown Source)	at net.adrianromero.data.user.BrowsableEditableData.fireDataBrowse(Unknown Source)	at net.adrianromero.data.user.BrowsableEditableData.baseMoveTo(Unknown Source)	at net.adrianromero.data.user.BrowsableEditableData.loadData(Unknown Source)	at net.adrianromero.data.user.BrowsableEditableData.actionLoad(Unknown Source)	at net.adrianromero.tpv.panels.JPanelTable.activate(Unknown Source)	at net.adrianromero.tpv.forms.JPrincipalApp.showTask(Unknown Source)	at net.adrianromero.tpv.forms.JPrincipalApp$MyAction.actionPerformed(Unknown Source)	at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)	at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)	at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)	at javax.swing.DefaultButtonModel.setPressed(Unknown Source)	at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)	at java.awt.Component.processMouseEvent(Unknown Source)	at javax.swing.JComponent.processMouseEvent(Unknown Source)	at java.awt.Component.processEvent(Unknown Source)	at java.awt.Container.processEvent(Unknown Source)	at java.awt.Component.dispatchEventImpl(Unknown Source)	at java.awt.Container.dispatchEventImpl(Unknown Source)	at java.awt.Component.dispatchEvent(Unknown Source)	at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)	at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)	at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)	at java.awt.Container.dispatchEventImpl(Unknown Source)	at java.awt.Window.dispatchEventImpl(Unknown Source)	at java.awt.Component.dispatchEvent(Unknown Source)	at java.awt.EventQueue.dispatchEvent(Unknown Source)	at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)	at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)	at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)	at java.awt.EventDispatchThread.run(Unknown Source)