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Undefined class constant 'ACTION_FLAG_PRODUCTS_PERMISSION_DENIED'

Undefined class constant 'ACTION_FLAG_PRODUCTS_PERMISSION_DENIED'

Hello

I have a problem, i upgraded magento from 1.6 to 1.9.1.1
everything seem function good, but in the back end i cant open the sales and i see a white screen.

The error log 

[Thu Jul 23 16:04:02 2015] [error] [client xxxxxxx PHP Fatal error:  Undefined class constant 'ACTION_FLAG_PRODUCTS_PERMISSION_DENIED' in /XXXXXXXXXXXXXXX/public_html/app/code/core/Mage/Adminhtml/controllers/Sales/OrderController.php on line 119, referer: http://rxxxxxxxxx.nl/index.php/magepanel/sales_order/index/key/bc0f219bb28ce9b485f2079546db28a0/

I searcht the internet but i cant find the problem 

1 REPLY

Re: Undefined class constant 'ACTION_FLAG_PRODUCTS_PERMISSION_DENIED'

Hi,

Look in app/code/local/Mage and see if Sales is there. If is there, change the name for the folder Sales_old and test again in admin. If is working, there is the problem in local Sales folder.