Not receiving attachments sent from MFMailComposer - iphone

Question

I am trying to send out an email with a .csv attachment on the iPad. I am using the MFMailComposer per many examples given which is displayed below. When sending out the email, I can see the correct file attachment in the MFMailComposer window, but when I receive the email, nothing is attached. Any guidance as to what I may be doing wrong would be appreciated. Thank you for your time,
if ([MFMailComposeViewController canSendMail]) {
MFMailComposeViewController *mailViewController = [[MFMailComposeViewController alloc] init];
mailViewController.mailComposeDelegate = self;
[mailViewController setSubject:[NSString stringWithFormat:#"Results for Participant %d.", [delegate participantNumber]]];
[mailViewController setMessageBody:[NSString stringWithFormat:#"The results for Participant %d in Study: %# are as follows:", [delegate participantNumber], [[delegate getAccountData:([delegate accountItems] * [delegate accountNumberInUse])] description]] isHTML:NO];
NSData *textData = [[NSData alloc] initWithContentsOfFile:dataFileName];
[mailViewController addAttachmentData:textData mimeType:#"text/csv" fileName:[NSString stringWithFormat:#"Participant_Info_#%d.csv", [delegate participantNumber]]];
[self presentModalViewController:mailViewController animated:YES];
[mailViewController release];
}

Answer 1

Check the content of the textData variable, also (just guessing from your code) the dataFileName needs to contain a full system path to the file, not just it's name!
NSString *dataFilePath = [[NSBundle mainBundle] pathForResource:dataFileName ofType:nil];