Redirect issues and items won't add to cart.

OK. So, I appear to be having the dreaded "redirect" issues many others are having.

Extension installed fine and I went through Display Manager to create Cart, and ran Checkout Wizard to create the rest of the pages. I created a couple of "add to cart" buttons for a few of the products, and uploaded everything to my Linux Server running PHP 5.

The problem with the adding to cart and redirects is that they work RANDOMLY, but more often, not at all.

Click add to cart, taken to a page that states "Your Cart is empty." Sometimes then clicking "View Cart" will make the item appear in the cart, but not usually. (This is the weird part, how inconsistently it's behaving.) When clicking "add to cart", it usually just reloads the page and nothing is placed in the cart. Server behaviors panel shows that the button has the correct redirect to "cart.php", my shopping cart page.

When I finally can see the cart, if I do a test to "clear the cart", it will usually work the first time. Then click "continue shopping" and nothing happens... page reloads. Again, checking the server behaviors in Dreamweaver shows that the buttons appear to have the correct file redirects attached to them.

Can't "remove item", cart reloads with same content. If I try to update the quantity and click "update cart", came thing.. page reloads with same cart contents.

I've only seen the "checkout.php" page once. It worked the FIRST time I tested it, but I haven't seen it since. Clicking the "checkout" button just reloads the cart page.

This is frustrating. Because the client needed the store up IMMEDIATELY (always, right?) I had to recreate the store with PayPal buttons until I can get this corrected. In the intrim, I've placed the files on a testing server in case someone can provide me any help.

I've tried the "Session_commit" settings recommended in other posts, but that didn't work. I've tried using both cookies and session variables to see if there was a change... nothing. This is a static store, so when the first instance didn't work, I took the original site files, created a new "site" in dreamweaver, went through all the steps to re-create the store, just to get the same results. I've done this "recreate site and setup eCart again" 6 times and got the same redirect errors each time. (Yes, I'm applying the eCart to a clean static site each time, NOT adding it onto a site I've already added eCart to, as I know that causes issues of it's own.

Lastly, I am using Dreamweaver CS3, Build 3481. I've tried it on a Mac and on a PC, just to make sure there were no problems with the platform and extension.

I will also copy and paste the cart.php code below for perusal.

Can anyone help me????

Thanks guys. I see other people using and loving eCart, so I'm hoping it's something ridiculously obvious, but I just can't make this guy work!

Here's the PHP portion of my shopping cart page:

<------------------------code--------------------->
<?php
//WA eCart Include
require_once("WA_eCart/mindblower5_PHP.php");
?><?php
$mindblower5->GetContent();
?><?php
// WA eCart Update
if (isset($_POST["mindblower5_Update_100"]) || isset($_POST["mindblower5_Update_100_x"])) {
$mindblower5->UpdateCart();
$Redirect_redirStr="";
if ($Redirect_redirStr != "") {
$mindblower5->redirStr = $Redirect_redirStr;
}
$mindblower5->cartAction = "Update";
}
?>
<?php
//WA eCart Check Out Update
if (isset($_POST["mindblower5_Checkout_1"]) || isset($_POST["mindblower5_Checkout_1_x"])) {
$mindblower5->UpdateCart();
$mindblower5->cartAction = "CheckOutUpdate";
}
?><?php
// WA eCart Continue Shopping
if (isset($_POST["mindblower5_Continue_100"]) || isset($_POST["mindblower5_Continue_100_x"])) {
$Redirect_redirStr="shop-motorcycle-performance.php";
if (true && isset($_SESSION['WAEC_ContinueRedirect'])) {
$Redirect_redirStr=siteToPageRel($_SESSION['WAEC_ContinueRedirect']);
}
if ($Redirect_redirStr != "") {
$mindblower5->redirStr = $Redirect_redirStr;
}
$mindblower5->cartAction = "Continue";
}
?><?php
// WA eCart Clear Cart
if (isset($_POST["mindblower5_Clear_100"]) || isset($_POST["mindblower5_Clear_100_x"])) {
$mindblower5->ClearCart();
$Redirect_redirStr="";
if ($Redirect_redirStr != "") {
$mindblower5->redirStr = $Redirect_redirStr;
}
$mindblower5->cartAction = "ClearCart";
}
?><?php
//WA eCart Redirect Check Out
if (isset($_POST["mindblower5_Checkout_1"]) || isset($_POST["mindblower5_Checkout_1_x"])) {
$Redirect_redirStr="checkout.php";
if ($Redirect_redirStr != "") {
if (isset($_SERVER['QUERY_STRING']) && $_SERVER['QUERY_STRING'] != "") {
if (strpos($Redirect_redirStr, "?") === false) {
$Redirect_redirStr .= "?".$_SERVER['QUERY_STRING'];
}
else {
$Redirect_redirStr .= "&".$_SERVER['QUERY_STRING'];
}
}

$mindblower5->redirStr = $Redirect_redirStr;
}
$mindblower5->cartAction = "Checkout";
}
?><?php
// WA eCart Redirect
if ($mindblower5->redirStr != "") {
header("Location: ".$mindblower5->redirStr);
}
?>
<------------------------code--------------------->