Email sending error

[antaresm]

Hi,
This a part of my code for sending e-mail message. But when I run it on Motorola Droid it crashed with error: "Sorry! The application Gmail (process com.google.android.gm) has stopped unexpectedly. Please try again."

	final Intent emailIntent = new Intent(android.content.Intent.ACTION_SEND); 
        emailIntent.setType("*/*");
        emailIntent.putExtra(android.content.Intent.EXTRA_EMAIL, new String[]{ address });
        emailIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, "Subj");
        ArrayList<File> flist = new ArrayList<File>();
		try {
			for (int i = 0; i < contacts.size(); i++){
				MyData c = data.get(i);
				File f;				
				f = File.createTempFile(c.name, ".dta");
				c.writeToFile(f);				
				emailIntent.putExtra(android.content.Intent.EXTRA_STREAM, f.toURI());				
                                flist.add(f);
			}
		} catch (IOException e) {			
			e.printStackTrace();
		}
        context.startActivity(Intent.createChooser(emailIntent, "Send mail..."));

May be somebody knows what a problem?
Thanks