when trying to edit a product in admin I suddenly got this error:
PHP Fatal Error: Class 'Varien_Data_Form_Element_Datetime' not found
in /home/public_html/lib/Varien/Data/Form/Abstract.php on line 146
I tried to google it but was unable to find a resolution.
Best Answer
Try to check if the file exists under /lib/Varien/Data/Form/Element/Datetime.php