cadastre-fr: Exception deleting the layer

[skyper]

What steps will reproduce the problem?

1. load an unrectified plan
2. delete the layer before clicking anywhere (You get a message about interrupting georefercies).
3. click on the map

What is the expected result?

Layer should be deleted and rectifying should be killed.

What happens instead?

Exception

Please provide any additional information below. Attach a screenshot if
possible.

Repository Root: http://josm.openstreetmap.de/svn
Build-Date: 2011-06-05 01:31:53
Last Changed Author: stoecker
Revision: 4115
Repository UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
URL: http://josm.openstreetmap.de/svn/trunk
Last Changed Date: 2011-06-04 23:33:08 +0200 (Sat, 04 Jun 2011)
Last Changed Rev: 4115

Identification: JOSM/1.5 (4115 en)
Memory Usage: 248 MB / 248 MB (60 MB allocated, but free)
Java version: 1.6.0_18, Sun Microsystems Inc., OpenJDK Client VM
Operating system: Linux
Dataset consistency test: No problems found

Plugin: OpeningHoursEditor (26002)
Plugin: ParallelWay (8.master-7a9a787)
Plugin: alignways (25199)
Plugin: buildings_tools (25905)
Plugin: cadastre-fr (25935)
Plugin: multipoly-convert (25192)
Plugin: reltoolbox
Plugin: reverter (26093)
Plugin: terracer (26029)
Plugin: undelete (26073)
Plugin: utilsplugin2 (26049)
Plugin: waydownloader (25190)

java.lang.NullPointerException
	at cadastre_fr.MenuActionGrabPlanImage.mouseClicked(MenuActionGrabPlanImage.java:151)
	at java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:270)
	at java.awt.Component.processMouseEvent(Component.java:6139)
	at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
	at java.awt.Component.processEvent(Component.java:5901)
	at java.awt.Container.processEvent(Container.java:2105)
	at java.awt.Component.dispatchEventImpl(Component.java:4497)
	at java.awt.Container.dispatchEventImpl(Container.java:2163)
	at java.awt.Component.dispatchEvent(Component.java:4323)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4461)
	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4134)
	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:4323)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:649)
	at java.awt.EventQueue.access$000(EventQueue.java:96)
	at java.awt.EventQueue$1.run(EventQueue.java:608)
	at java.awt.EventQueue$1.run(EventQueue.java:606)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:105)
	at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:116)
	at java.awt.EventQueue$2.run(EventQueue.java:622)
	at java.awt.EventQueue$2.run(EventQueue.java:620)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:105)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:619)
	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