Bug 147407 Preview the attached report in the web viewer first time and then click the TOC button will cause NPE error
Description: It just can be reprouduced at first time preview. Step to reproduce: 1. please use attach report file 2. preview it in the web viewer 3. click the "Toggle table of contents" button Actual result: As the atteched screenshot shows,There is a NPE error.And if you preview it in the Web viewer again, the phenomenon is disappear.But reopen the eclipse and preview it at first time, it will be occured.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
* @return String
	 */
	public static String getConfigFileName( String reportDesignName )
	{
		if ( reportDesignName == null )
			return null;
		String configFileName = null;
		if ( reportDesignName.endsWith( IBirtConstants.SUFFIX_DESIGN_FILE ) )
		{
			configFileName = reportDesignName.replaceFirst(
					IBirtConstants.SUFFIX_DESIGN_FILE,
					IBirtConstants.SUFFIX_DESIGN_CONFIG );
		}
		else if ( reportDesignName
				.endsWith( IBirtConstants.SUFFIX_TEMPLATE_FILE ) )
		{
			configFileName = reportDesignName.replaceFirst(
					IBirtConstants.SUFFIX_TEMPLATE_FILE,
					IBirtConstants.SUFFIX_DESIGN_CONFIG );
		}
		return configFileName;
	}
	/**
	 * @return the isWorkingFolderAccessOnly
	 */
	public static boolean isWorkingFolderAccessOnly( )
	{
		return isWorkingFolderAccessOnly;
	}
}