NSDateFormatter Error. How so?

    NSDateFormatter *timeFormatter = [[[NSDateFormatter alloc] init] autorelease];
    [timeFormatter setDateFormat:@"h:mm a"];
    NSString *fullTime = [timeFormatter stringFromDate:someDateHere];
    NSArray *timeParts = [fullTime componentsSeparatedByString:@" "];
    timeLabel.text = [timeParts objectAtIndex:0];
    ampmLabel.text = [timeParts objectAtIndex:1];

LAST crash using

    NSRangeException*** -[__NSArrayI objectAtIndex:]: index 1 beyond bounds [0 .. 0]

How is this possible? On the date that comes back immediately before this code, there is a zero check.