Uploading in an ftp applet help

[d4dirty]

Hi Guys,

I am fairly new to applets, and at my wits end on this one. I am writing a simple ftp file upload applet. I have been able to connect to my FTP server, but after sending 8 KB's of data of a file over I constantly get a:

java.lang.NullPointerException
	at java.io.BufferedOutputStream.flushBuffer(Unknown Source)
	at java.io.BufferedOutputStream.write(Unknown Source)
	at Uploader.run(Uploader.java:267)
	at java.lang.Thread.run(Unknown Source)

on this line:

ftpOut.write(buffer, 0, bytesRead);

of this function:

BufferedOutputStream ftpOut = new BufferedOutputStream(client.storeFileStream(this.uploadedFileName));
			BufferedInputStream fileIn = new BufferedInputStream(new FileInputStream(this.theFile));
			
			// initalise some working vars
			byte[] buffer = new byte[1024];
			int bytesRead = fileIn.read(buffer);
			long runningTotal = 0;
			long total = this.theFile.length();
			int percentComplete = 0;
			
			// do the upload loop
			System.out.println("Starting upload Loop");
			
			
			while (bytesRead > 0)
			{
				System.out.println("Upload Looped writing" + percentComplete);
				// write the buffer
				ftpOut.write(buffer, 0, bytesRead);
				
				// update the totals
				runningTotal += bytesRead;
				percentComplete = (int)((double)runningTotal / (double)total * 100);
				this.txtFileName.setText("Uploaded " + getHumanReadibleFileSize(runningTotal) + 	" (" + percentComplete + "%)");
					
					
			
				System.out.println("Upload Looped reading" + percentComplete);
				// read some more from the input
				bytesRead = fileIn.read(buffer);
			}

Is this my FTP server rejecting my upload? I just cant seem to figure out what the problem is.