NPE in imagery preferences

[naoliv]

Don't know exactly what caused this, but I only changed this in Imagery Preferences:

• sharpen to soft (from None)
• WMS simultaneos connections to 4 (from 3)

and then clicked on OK

Repository Root: http://josm.openstreetmap.de/svn
Build-Date: 2013-12-18 02:33:54
Last Changed Author: Don-vip
Revision: 6489
Repository UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
URL: http://josm.openstreetmap.de/svn/trunk
Last Changed Date: 2013-12-18 03:03:14 +0100 (Wed, 18 Dec 2013)
Last Changed Rev: 6489

Identification: JOSM/1.5 (6489 pt_BR) Linux Debian GNU/Linux unstable (sid)
Memory Usage: 324 MB / 1756 MB (114 MB allocated, but free)
Java version: 1.7.0_45, Oracle Corporation, OpenJDK 64-Bit Server VM
Java package: openjdk-7-jre:amd64-7u45-2.4.3-2.3
VM arguments: [-Djava.net.useSystemProxies=true, -Dawt.useSystemAAFontSettings=on]
Dataset consistency test: No problems found

Plugin: AddrInterpolation (30034)
Plugin: Create_grid_of_ways (29854)
Plugin: FixAddresses (29971)
Plugin: ImageryCache (29946)
Plugin: OpeningHoursEditor (30117)
Plugin: PicLayer (29854)
Plugin: SimplifyArea (30017)
Plugin: buildings_tools (30057)
Plugin: editgpx (29854)
Plugin: geotools (29767)
Plugin: jts (29854)
Plugin: merge-overlap (30034)
Plugin: notes (v0.7)
Plugin: opendata (30097)
Plugin: pdfimport (29913)
Plugin: reverter (30031)
Plugin: tagging-preset-tester (30017)
Plugin: turnrestrictions (30110)
Plugin: undelete (29854)
Plugin: utilsplugin2 (30017)

java.lang.NullPointerException
	at java.util.regex.Matcher.getTextLength(Matcher.java:1234)
	at java.util.regex.Matcher.reset(Matcher.java:308)
	at java.util.regex.Matcher.<init>(Matcher.java:228)
	at java.util.regex.Pattern.matcher(Pattern.java:1088)
	at org.openstreetmap.josm.io.imagery.WMSGrabber.<init>(WMSGrabber.java:54)
	at org.openstreetmap.josm.gui.layer.WMSLayer.getGrabber(WMSLayer.java:992)
	at org.openstreetmap.josm.gui.layer.WMSLayer.startGrabberThreads(WMSLayer.java:947)
	at org.openstreetmap.josm.gui.layer.WMSLayer.preferenceChanged(WMSLayer.java:973)
	at org.openstreetmap.josm.data.Preferences.firePreferenceChanged(Preferences.java:299)
	at org.openstreetmap.josm.data.Preferences.put(Preferences.java:556)
	at org.openstreetmap.josm.data.Preferences.putInteger(Preferences.java:566)
	at org.openstreetmap.josm.data.preferences.IntegerProperty.put(IntegerProperty.java:27)
	at org.openstreetmap.josm.gui.preferences.imagery.WMSSettingsPanel.saveSettings(WMSSettingsPanel.java:106)
	at org.openstreetmap.josm.gui.preferences.imagery.ImageryPreference.ok(ImageryPreference.java:148)
	at org.openstreetmap.josm.gui.preferences.PreferenceTabbedPane$4.run(PreferenceTabbedPane.java:279)
	at org.openstreetmap.josm.gui.preferences.PreferenceTabbedPane.savePreferences(PreferenceTabbedPane.java:345)
	at org.openstreetmap.josm.gui.preferences.PreferenceDialog$OKAction.actionPerformed(PreferenceDialog.java:174)
	at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
	at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
	at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
	at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
	at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
	at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:289)
	at java.awt.Component.processMouseEvent(Component.java:6505)
	at javax.swing.JComponent.processMouseEvent(JComponent.java:3311)
	at java.awt.Component.processEvent(Component.java:6270)
	at java.awt.Container.processEvent(Container.java:2229)
	at java.awt.Component.dispatchEventImpl(Component.java:4861)
	at java.awt.Container.dispatchEventImpl(Container.java:2287)
	at java.awt.Component.dispatchEvent(Component.java:4687)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
	at java.awt.Container.dispatchEventImpl(Container.java:2273)
	at java.awt.Window.dispatchEventImpl(Window.java:2719)
	at java.awt.Component.dispatchEvent(Component.java:4687)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:735)
	at java.awt.EventQueue.access$200(EventQueue.java:103)
	at java.awt.EventQueue$3.run(EventQueue.java:694)
	at java.awt.EventQueue$3.run(EventQueue.java:692)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
	at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
	at java.awt.EventQueue$4.run(EventQueue.java:708)
	at java.awt.EventQueue$4.run(EventQueue.java:706)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:705)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:154)
	at java.awt.WaitDispatchSupport$2.run(WaitDispatchSupport.java:182)
	at java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:221)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.awt.WaitDispatchSupport.enter(WaitDispatchSupport.java:219)
	at java.awt.Dialog.show(Dialog.java:1082)
	at java.awt.Component.show(Component.java:1651)
	at java.awt.Component.setVisible(Component.java:1603)
	at java.awt.Window.setVisible(Window.java:1014)
	at java.awt.Dialog.setVisible(Dialog.java:1005)
	at org.openstreetmap.josm.gui.preferences.PreferenceDialog.setVisible(PreferenceDialog.java:126)
	at org.openstreetmap.josm.actions.PreferencesAction.run(PreferencesAction.java:72)
	at org.openstreetmap.josm.actions.PreferencesAction.actionPerformed(PreferencesAction.java:61)
	at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
	at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
...<snip>...