Add To Cart Button Doesn't Work

[ppwd]

Hi, I have a site i've developed and the cart "was" working fine, but for some reason has stopped.

When i click on "add to cart" on a product nothing happens.  But firebug shows me this upon clicking:

   
402 Payment Required
"NetworkError: 402 Payment Required - http://test.debsnaturalskincare.com.au/index.php?option=com_virtuemart&nosef=1&view=cart&task=addJS&format=json&quantity%255B%255D%3D1%26option%3Dcom_virtuemart%26view%3Dcart%26virtuemart_product_id%255B%255D%3D1%26virtuemart_manufacturer_id%3D1%26virtuemart_category_id%255B%255D%3D1&_=1337513318308"

I have searched here and have had no luck.  I've tried all options with the jquery options inside the shop / template config and have tried installing jquery integrator to see if that helps - no change (have since disabled that).

http://test.debsnaturalskincare.com.au/store/skincare/eye-face-cream-30g-detail.html

Joomla: 2.5.4
Virtuemart: 2.0.0

I have tried installing 2.0.6 but my joomla install only shows a white screen when i try and update, which I believe might be a whole other issue.

Please help!  I'm at the end of my wits and close to losing my mind!

[jenkinhill]

VirtueMart 2.0.0 did not work properly in Joomla 2.5 - VM2.0.2 was the first J2.5 compatible version, so if you cannot go to 2.0.6 then maybe try 2.0.4

Error message on
http://test.debsnaturalskincare.com.au/store/skincare/eye-face-cream-30g-detail.html

"Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 40961 bytes) in /home/client2/debsnat/www/components/com_hikashop/views/category/tmpl/listing.php on line 12 "  - says this is Hikashop......

[PRO]

I have tried installing 2.0.6 but my joomla install only shows a white screen when i try and update, which I believe might be a whole other issue.

Please help!  I'm at the end of my wits and close to losing my mind!

ppwd,

how did you try installing? through extension manager? live update?

[ppwd]

Sorry for the delay guys, i've been out of town the last few days.

I have been trying to update my virtuemart, but my Joomla install isn't allowing me to update it.  Every time I try I get a blank page and firebug tells me this message:

NetworkError: 500 Internal Server Error

I can install some modules, so it's not a blanket inability to update or upgrade extensions.  I want to update to 2.06 but can't get it to work.  If i can get it to update I think it might be ok.

[ppwd]

VirtueMart 2.0.0 did not work properly in Joomla 2.5 - VM2.0.2 was the first J2.5 compatible version, so if you cannot go to 2.0.6 then maybe try 2.0.4

Error message on
http://test.debsnaturalskincare.com.au/store/skincare/eye-face-cream-30g-detail.html

"Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 40961 bytes) in /home/client2/debsnat/www/components/com_hikashop/views/category/tmpl/listing.php on line 12 "  - says this is Hikashop......

Yes, i was trying a different cart after the fact.  I have since removed hikashop as REALLY want to use virtuemart since in my experience, it's by far the best available.