npe at cadastre georeferencing

[richard.hitier@…]

I'm using the cadastre-fr plugin with bitmap images to be georeferenced. This error occurs after having cropped the image, about to clic on the second lambert point

theres the trace:

tp://josm.openstreetmap.de/svn
Build-Date: 2010-10-06 01:31:17
Last Changed Author: bastiK
Revision: 3592
Repository UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
URL: ​http://josm.openstreetmap.de/svn/trunk
Last Changed Date: 2010-10-05 20:34:31 +0200 (Tue, 05 Oct 2010)
Last Changed Rev: 3592

Identification: JOSM/1.5 (3592 fr)
Memory Usage: 235 MB / 494 MB (42 MB allocated, but free)
Java version: 1.6.0_22, Sun Microsystems Inc., Java HotSpot(TM) Client VM
Operating system: Linux
Dataset consistency test: No problems found

Plugin: cadastre-fr (22850)

java.lang.NullPointerException

at cadastre_fr.MenuActionGrabPlanImage.affineTransform(MenuActionGrabPlanImage.java:375)
at cadastre_fr.MenuActionGrabPlanImage.endGeoreferencing(MenuActionGrabPlanImage.java:260)
at cadastre_fr.MenuActionGrabPlanImage.handleNewCoordinates(MenuActionGrabPlanImage.java:362)
at cadastre_fr.MenuActionGrabPlanImage.mouseClicked(MenuActionGrabPlanImage.java:147)
at java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:253)
at java.awt.Component.processMouseEvent(Component.java:6270)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
at java.awt.Component.processEvent(Component.java:6032)
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:4577)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4247)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4168)
at java.awt.Container.dispatchEventImpl(Container.java:2085)
at java.awt.Window.dispatchEventImpl(Window.java:2478)
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)