Sorted:

problem about upgrade-issue-Collection of common programming errors

php,magentoRelated issues-Collection of common programming errors

php,zend-framework,phpunitRelated issues-Collection of common programming errors

Magento not showing error messages on login page after redirect from cart-Collection of common programming errors

c#,oop,design,interfaceRelated issues-Collection of common programming errors

Magento not showing error messages on login page after redirect from cart-Collection of common programming errors

problem about magento-1.6-Collection of common programming errors

php,sql,magento-1.6Related issues-Collection of common programming errors

SQLSTATE[42S22]: Column not found: 1054 Unknown column 'main_table.sfo.customer_email' in 'where clause' [closed]-Collection of common programming errors

SQLSTATE[42S22]: Column not found: 1054 Unknown column 'main_table.sfo.customer_email' in 'where clause' [closed]-Collection of common programming errors