Hi,

I updated K2 to 2.5.7. Now i can't save new categories or articles. I get an 500 error:

Joomla!
500 - There was an error.

return to control panel

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Call stack
# Function Location
1 JAdministrator->dispatch() /home/heerlijk/domains/website.nl/public_html/administrator/index.php:46
2 JError::raiseError() /home/heerlijk/domains/website.nl/public_html/administrator/includes/application.php:164
3 JError::raise() /home/heerlijk/domains/website.nl/public_html/libraries/joomla/error/error.php:251

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Any suggestions on how to save this?