[Error 500] when trying to create new element

[Jaanus]

When I click + button to add a new element:
HTTP error 500 (Internal Server Error)

When I try to edit an existing element (Joomla debug is on):

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

 

[Jaanus]

Seems to be solved now. In case anyone use changed that I made for this pull request
https://github.com/Fabrik/fabrik/pull/588
then you have to comment out one of the getFieldDescription() functions from colourpicker.php