NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"riderfinder.appspot.com/login"]];
    [request setHTTPMethod:@"POST"];
    [request setValue:@"text/plain"
   forHTTPHeaderField:@"Content-type"];

    NSString *body = @"username=";
    [body stringByAppendingString:accountEntered];
    [body stringByAppendingString:@"&"];
    [body stringByAppendingString:@"password="];
    [body stringByAppendingString:passwordEntered];

    NSMutableData *data = [[NSMutableData data] initWithString:body];

    //Crashes everything with "SIGABRT" warning/error. Nothing else is said.
    [request setHTTPBody:data];

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"riderfinder.appspot.com/login"]];
[request setHTTPMethod:@"POST"];
[request setValue:@"text/plain" forHTTPHeaderField:@"Content-type"];

NSString *body = @"username=";
body=[body stringByAppendingString:accountEntered];
body=[body stringByAppendingString:@"&"];
body=[body stringByAppendingString:@"password="];
body=[body stringByAppendingString: passwordEntered];

//NSMutableData *data = [[NSMutableData data] initWithString:body];
NSData *data=[body dataUsingEncoding:NSUTF8StringEncoding];

[request setHTTPBody:data];