Bug 191168 [Regression]Exception occurs when resize masterpage in library
Description: Exception occurs when resize masterpage in library. Build number:2.2.0.v20070606-0630 Regression bug:187443 Steps to reproduce: 1. New a library. 2. Go to Master Page, resize the master page using the ruler. Expected result: 1. Layout works correctly. 2. No exception is thrown out. Error log: An unexpected internal exception occurred.Please see log for detail. Plug-in Provider:Eclipse.org Plug-in Name:BIRT Designer UI Plug-in ID:org.eclipse.birt.report.designer.ui Version:2.2.0.v20070606-0630 Error Code:Error.GUIException.invokedByUnexpectedException Error Message:org.eclipse.birt.report.designer.internal.lib.lalyout.LibraryReportDesignLayout
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/core/Module.java
* @param theSession
	 *            the session of the report
	 */
	protected Module( DesignSession theSession )
	{
		session = theSession;
		
		this.nameHelper = new ModuleNameHelper( this );
		
		setID( getNextID( ) );
		addElementID( this );
		versionMgr = new VersionControlMgr( );
	}
	/**
	 * Returns the design session that represents the designs that the user has
	 * open and user preferences.
	 * 
	 * @return the design session
	 */
	public DesignSession getSession( )
	{
		return session;
	}
	/**
	 * Finds a shared style in this module itself.
	 * 
	 * @param name
	 *            Name of the style to find.
	 * @return The style, or null if the style is not found.
	 */