Login redirects to blank pages

I inserted a simple login on the homepage and added the server behavior to testing redirect to separate pages depending on successful vs. failed login. Oddly the redirects seem to go to the pages correctly, but the pages are blank except for the banner at the top. The url in the bar says its the correct page but blank below the banner. When I open up the pages individually they look just fine. Any idea what could be causing this?

Gentlemen, I have asked several questions on the forums today that apparently you couldn't get to and we're coming up on the weekend. Of my questions this one in particular I would greatly appreciate some thoughts before you take off. That is, if you have anything to share on what may be happening.

This leads me to believe that there is an error on the page when trying to handle the posted values from the form and error reporting is not turned on. Try adding this to the top of the page to turn error reporting on:
<?php
error_reporting(E_ALL);
ini_set('display_errors','on');
?>

This is the error message with the error reporting turned on like you asked:

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /home/content/p/e/t/petermcdonald/html/index.php:5) in /home/content/p/e/t/petermcdonald/html/WA_ValidationToolkit/WAVT_ValidatedForm_PHP.php on line 3

The most common cause for this error is with having spaces between the closing and opening php tags. If you have any php tags that look like this:
?>

<?php

you should modify them to look like this:
?>
<?php

Thanks Jimmy, I'll check it and get back if still having problems.

Hello Jimmy,

I was going to asked same question.
I have same error message such as"
Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /virtual/users/e16666-18007/web/emails2.php:1) in /virtual/users/e16666-18007/web/WA_ValidationToolkit/WAVT_ValidatedForm_PHP.php on line 3"

and I look for the space error but couldn't find it.
I attached the page, Please see if you could find the error.
thanks for reading and help

It looks like you posted another thread over here:
showthread.php?t=12890

I'll respond in that thread.