White Screen at Checkout. VM 2.6.9. Joomla 2.5

[KWinston]

When method of payment is entered and CHECKOUT is selected, white screen appears with the following error:

Fatal error: Cannot redeclare non static VirtueMartCart::$_triesValidateCoupon as static OPCcheckout::$_triesValidateCoupon in /home/content/97/11875497/html/components/com_onepage/overrides/cart_override.php on line 789

I am uncertain hoe to address this issue.  I increased server memory to 128mb yesterday. GoDaddy assures me memory is not the issue as is often the case with the White Screen of Death and VM.

Please advise as to how to fix this issue. The business depends on their store as their only means of income and it has been down for days.

Your kind ad patient assistance is very much appreciated.

[jenkinhill]

Ask the developer of your One Page Chckout (OPC) plugin for support. Maybe the plugin needs updating. Also see http://virtuemart.net/news/latest-news/462-security-release-of-vm2-6-10-and-vm2-9-9b

[KWinston]

Thank you. I will check this out.

[KWinston]

Ask the developer of your One Page Chckout (OPC) plugin for support. Maybe the plugin needs updating. Also see http://virtuemart.net/news/latest-news/462-security-release-of-vm2-6-10-and-vm2-9-9b

CORRECTION: Currently running VM 2.6.10, not 2.6.9. All current, but still White Page of Death...

[GJC Web Design]

Your error is

Fatal error: Cannot redeclare non static VirtueMartCart::$_triesValidateCoupon as static OPCcheckout::$_triesValidateCoupon in /home/content/97/11875497/html/components/com_onepage/overrides/cart_override.php on line 789

therefore you need to contact Rupostel

[KWinston]

Your error is

Fatal error: Cannot redeclare non static VirtueMartCart::$_triesValidateCoupon as static OPCcheckout::$_triesValidateCoupon in /home/content/97/11875497/html/components/com_onepage/overrides/cart_override.php on line 789

therefore you need to contact Rupostel

Thank you.  I have tried to contact them via their site and even their VM Forum link, but neither page loads.  I even went to Joomla extensions to see if I could download their latest version OPC for VM and it is the same result.  RuposTel has gone dark. 

An ideas on how I can fix this otherwise?  Thanks!

[GJC Web Design]

loads fine here:  http://www.rupostel.com/

[KWinston]

loads fine here:  http://www.rupostel.com/

Thank you for your reply.  I tried loading this very page dozen of times yesterday to no avail.  Now it loads just fine. Curious... RuposTel requires any plugin update via their website, so I contacted support.  They sent me a plugin update which I installed.

The store has been restored! Issue resolved. RuposTel plugin was not compatible with The VM2.6.10 update. The plugin they sent me addressed this.

My heartfelt thank you to  this forum, but especially to GJC Web Design for your patience and perseverance.