Gift Certificate Send Confim Problems

I've been unable to find info on this problem.
I have a zencart store and have enabled gc's as directed. When testing, as a customer, I can redeem gc's.
But when trying to send a gc to somebody from my shopping cart, I get to the "confirm" page, hit "confirm" and the page hangs there until I get a CGI timeout.
I am thinking that it is something with gv file with php that has "if ... process" then it will go to TIMEOUT.
But, the gc shows as sent in admin gc queue, even to the person to whom it was sent, even though the person didn't receive it.
Thank you in advance.
Greg

For additional reference, the command below seems to address/direct the action I'm having trouble with, but I don't know how/where to correct it:

// verify no timeout has occurred on the send or process
if (!$_SESSION['customer_id'] and ($_GET['action'] == 'send' or $_GET['action'] == 'process')) {
zen_redirect(zen_href_link(FILENAME_TIME_OUT));

It is in the /includes/modules/pages/gv_send

Okay, I had a very similar problem with "Whoops, session expired" after customer login. I also had a problem with Gift Certificate not being confirmed after sending.
I adjusted from admin>configuration>sessions>check ip address=true (with force cookie=false; recreate session=false) and it solved both problems!
Fluke?

You should check with your hosting site and see why you need to have the Recreate Sessions set to false as this is a less secure method than when it is set to true ...