We keep getting the following Exception while trying to use 

           VisioTextExtractor extractor = null;
           String convertedText = null;
           try {
                  extractor = new VisioTextExtractor(isr);
           } catch ( java.io.IOException cie ) {
                    String msg = cie.getMessage();
                    if (LOGGER.isLoggable(Level.WARNING)) {
                        LOGGER.log(Level.WARNING, msg);
                    };
           }
           convertedText = extractor.getText();
           return convertedText;


The following Exception Occurs:

java.lang.ArrayIndexOutOfBoundsException: 1991
        at org.apache.poi.util.LittleEndian.getNumber(LittleEndian.java:492)
        at org.apache.poi.util.LittleEndian.getUInt(LittleEndian.java:164)
        at org.apache.poi.hdgf.chunks.ChunkHeader.createChunkHeader(ChunkHeader.java:43)
        at org.apache.poi.hdgf.chunks.ChunkFactory.createChunk(ChunkFactory.java:108)
        at org.apache.poi.hdgf.streams.ChunkStream.findChunks(ChunkStream.java:54)
        at org.apache.poi.hdgf.streams.PointerContainingStream.findChildren(PointerContainingStream.java:92)
        at org.apache.poi.hdgf.streams.PointerContainingStream.findChildren(PointerContainingStream.java:99)
        at org.apache.poi.hdgf.streams.PointerContainingStream.findChildren(PointerContainingStream.java:99)
        at org.apache.poi.hdgf.HDGFDiagram.<init>(HDGFDiagram.java:92)
        at org.apache.poi.hdgf.extractor.VisioTextExtractor.<init>(VisioTextExtractor.java:46)
        at org.apache.poi.hdgf.extractor.VisioTextExtractor.<init>(VisioTextExtractor.java:50)