Bug 173236 NPE is thrown when opening a design file that is created by a higher version BIRT
1. New a report, switch to xml-source view. 2. Edit the version number in line 2, from 3.2.10 to 3.2.11 and save. 3. Close the report and reopen it. The xml-source view is opened automatically. Switch to lay-out view, there's an error message window, and NPE is thrown in error-log view. When user is trying to open a design file that is created by a higher version BIRT, model will throw an exception and stop parsing the report design file. UI should 1. Prevent the NPE 2. Telling user that he is using a higher version design file that this build does not support. (Catch the exception and reflect the message in the exception to end user)
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/ErrorDetail.java
return validationID;
	}
	/**
	 * Converts the exception list to the error detail list.
	 * 
	 * @param exceptionList
	 *            list of <code>SemanticException</code>.
	 * @return the error detail list of <code>ErrorDetail</code>
	 */
	public static List convertExceptionList( List exceptionList )
	{
		List errorDetailList = new ArrayList( );
		Iterator iterError = exceptionList.iterator( );
		while ( iterError.hasNext( ) )
		{
			Exception e = (Exception) iterError.next( );
			ErrorDetail errorDetail = new ErrorDetail( e );
			errorDetailList.add( errorDetail );
		}
		return errorDetailList;
	}
	/**
	 * Returns a list containing the semantic errors with the given error type.
	 * 
	 * @param errors
	 *            the list of the error details
	 * @param errorType
	 *            the semantic error type. The possible value is:
	 *            <ul>
	 *            <li><code>DesignFileException.SEMANTIC_ERROR</code>