Seems to be an error from HPSF, when HSLF loads the properties.

Could you attach the problem file to the bug, so some can look into why HPSF
isn't liking it?

I don't change properties ,I just writed by prquick-guide.pdf simply.

code:
public String getContent() {
		String contents = "";
		try {
			
			
			/**error*/
			PowerPointExtractor pe = new PowerPointExtractor
(getStreamToIndex()); //getStreamToIndex() is InputStream
			System.out.println(pe.getNotes());
			contents = pe.getText(true , true);
			System.out.println(contents);
			
                         /**error too*/
			/*SlideShow ss = new SlideShow(new HSLFSlideShow
(getStreamToIndex()));
			String text = ss.getSlides()[0].getNotesSheet
().toString();
			System.out.println(text);*/
			
			
			
			/****** success  ****/
			/*QuickButCruddyTextExtractor qt = new 
QuickButCruddyTextExtractor(getStreamToIndex());
			contents =  qt.getTextAsString();
			System.out.println(contents);*/
			
			
			
			
						
			
			
		} catch (Exception ex) {
			ex.printStackTrace();
			logger.error(ex.getMessage());
		}
		return contents;
	}

Can you attach the document you're working with?

You're not changing the properties, but HSLF still tries to load them when you
init the HSLFSlideShow object, and the HPSF properties stuff isn't liking your
document.

Created attachment 19482 [details]
edit with Microsoft Office 2003

I am a chinese user

I cannot see any problems with the document using a) poibrowser to display the
properties and b) running the HPSF testcases with the document in question in
src/testcases/org/apache/poi/hpsf/data.

Please retry with the latest subversion repository snapshot and reopen the bug
if necessary.

thanks for your solution.