Code upgrade Interspire shopping cart 6.1

We have a site based on Interspire Shopping Cart 6.1.1. IT is Mysql Version is 5.096. it is runs well, after upgrade the Mysql Verison from 5.096 to 5.1.7 In WHM Control Panel. and the MYSQL upgrade is One WAY, can't recover to the old Version. The site can' t work, it show below error: the main problem are the shopping moude and checkout moulde can't work normally. Strict Standards: Declaration of ISC_SHIPPING::SaveModuleSettings() should be compatible with ISC_MODULE::SaveModuleSettings($settings = Array, $deleteFirst = true) in /home/orient/public_html/includes/classes/[login to view URL] on line 8 Strict Standards: Declaration of ISC_SHIPPING::getpropertiessheet() should be compatible with ISC_MODULE::GetPropertiesSheet($tab_id, $idGlobal, $jsGlobal, $jsSelectedFunction, $customVars = Array, $moduleId = NULL) in /home/orient/public_html/includes/classes/[login to view URL] on line 8 Strict Standards: Declaration of ISC_NOTIFICATION::GetPropertiesSheet() should be compatible with ISC_MODULE::GetPropertiesSheet($tab_id, $idGlobal, $jsGlobal, $jsSelectedFunction, $customVars = Array, $moduleId = NULL) in /home/orient/public_html/includes/classes/[login to view URL] on line 128 Strict Standards: Declaration of ISC_CHECKOUT_PROVIDER::GetPropertiesSheet() should be compatible with ISC_MODULE::GetPropertiesSheet($tab_id, $idGlobal, $jsGlobal, $jsSelectedFunction, $customVars = Array, $moduleId = NULL) in /home/orient/public_html/includes/classes/[login to view URL] on line 827 we need a engineer can resolve this problem in 1-3 days.