Checkout - on confirm purchase - Fatal error: Allowed memory size ... exhausted

[seehandy]

Checkout - on confirm purchase - Fatal error: Allowed memory size ... exhausted

on root, file 'php.ini' i already put
max_execution_time = 30
max_input_time = 60
memory_limit = 600M

Version & plugin:
Joomla 2.5.17
Virtuemart 2.0.26a
Shipping plugin: Advanced Shipping by Rules for VirtueMart
Payment: bank transfer (plugin:standard)

Website: lilcherryshop.com
You could pretend to shop
Login: test1
Password: test

Discount Plugin: Awo Coupon(FREE) -- enable
on checkout when confirm purchase clicked
Appear blank page with error notification:

Fatal error: Allowed memory size of 629145600 bytes exhausted (tried to allocate 32 bytes) in /home/m280658/public_html/lilcherryshop.com/libraries/joomla/language/language.php on line 347

language.php on line 347: $string = str_replace(array('\\\\', '\t', '\n'), array("\\", "\t", "\n"), $string)


When plugin: Awo Coupon(FREE) -- disable
Appear blank page with error notification

Fatal error: Allowed memory size of 629145600 bytes exhausted (tried to allocate 130968 bytes) in /home/m280658/public_html/lilcherryshop.com/libraries/joomla/client/helper.php on line 168

helper.php on line 168-171:
if ($options['enabled'] == false)
      {
         // The client is disabled in global config, so let's pretend we are OK
         $return = true;


Anyone could help me please?
I really confused

[jenkinhill]

So those errors are coming from libraries/joomla/language/language.php on line 347 and libraries/joomla/client/helper.php  - neither are VirtueMart files. Never seen that errror before. As you are using very old (and hackable) versions is this a site which was working and now is not?  http://forum.virtuemart.net/index.php?topic=118683.0