RS saving the details of a course

2014-11-19 07:23:...
Error#: N1-E8
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:33.0) Gecko/20100101 Firefox/33.0
Log msg: **RedScreen**

<dispatchinfo>
	<componentinfo> 
		<compname>ffo_main_bgrep</compname> 
		<compclass>org.olat.core.gui.components.form.flexible.impl.FormWrapperContainer</compclass>
		<extendedinfo>n/a</extendedinfo>
		<event>  
			<class&gt;org.olat.core.gui.control.Event</class&gt;
			<command>validation ok</command>
			<tostring>com:validation ok,org.olat.core.gui.control.Event@d62b3f02</tostring>
		</event>
	</componentinfo>
	<controllerinfo> 
		<controllername>org.olat.repository.ui.author.RepositoryEditDescriptionController</controllername>
		<controllername>org.olat.course.run.CourseRuntimeController</controllername> 
		<controllername>org.olat.core.commons.fullWebApp.BaseFullWebappController</controllername>
	</controllerinfo>
</dispatchinfo>

Cause: stack of 1.cause::org.olat.core.logging.OLATRuntimeException: null
-> at org.olat.core.gui.exception.ExceptionWindowController.<init>(ExceptionWindowController.java:116)
   at org.olat.core.gui.exception.MsgFactory.createMessageChiefController(MsgFactory.java:57)
   at org.olat.core.gui.exception.MsgFactory.createMessageChiefController(MsgFactory.java:46)
   at org.olat.core.gui.components.Window.dispatchRequest(Window.java:524)
   at org.olat.core.gui.components.Window.doDispatchRequest(Window.java:228)
   at org.olat.core.gui.components.AbstractComponent.dispatchRequest(AbstractComponent.java:192)
   at org.olat.dispatcher.AuthenticatedDispatcher.processValidDispatchURI(AuthenticatedDispatcher.java:241)
   at org.olat.dispatcher.AuthenticatedDispatcher.execute(AuthenticatedDispatcher.java:197)
   at org.olat.core.servlets.OpenOLATServlet.executeUserRequest(OpenOLATServlet.java:269)
   at org.olat.core.servlets.OpenOLATServlet.doPost(OpenOLATServlet.java:212)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
stack of 2.cause::java.lang.NullPointerException: null
-> at org.olat.core.commons.services.image.spi.ImageHelperImpl.getInputStream(ImageHelperImpl.java:257)
   at org.olat.core.commons.services.image.spi.ImageHelperImpl.scaleImage(ImageHelperImpl.java:203)
   at org.olat.core.commons.services.image.ImageHelperBean.scaleImage(ImageHelperBean.java:69)
   at org.olat.repository.RepositoryManager.setImage(RepositoryManager.java:213)
   at org.olat.repository.ui.author.RepositoryEditDescriptionController.formOK(RepositoryEditDescriptionController.java:467)
   at org.olat.core.gui.components.form.flexible.impl.FormBasicController.event(FormBasicController.java:369)
   at org.olat.core.gui.control.DefaultController.dispatchEvent(DefaultController.java:197)
   at org.olat.core.gui.components.AbstractComponent$1.run(AbstractComponent.java:238)
   at org.olat.core.logging.activity.ThreadLocalUserActivityLoggerInstaller.runWithUserActivityLogger(ThreadLocalUserActivityLoggerInstaller.java:108)
   at org.olat.core.gui.components.AbstractComponent.fireEvent(AbstractComponent.java:236)
   at org.olat.core.gui.components.form.flexible.impl.FormWrapperContainer.fireValidation(FormWrapperContainer.java:122)