Validation rules are not working

[Aaarrrgggh]

Hello all,

I tried to use this plugin with Cakephp 2.3.6 an when I tried to submit the upload form, I have this issue :

Could not find validation handler attachmentMaxSize for picture [CORE\Cake\Model\Validator\CakeValidationRule.php, line 285]

Could not find validation handler maxWidth for picture [CORE\Cake\Model\Validator\CakeValidationRule.php, line 285]

If I comment the validation rules, the file is indeed uploaded.

Someone has an idea please ?

Thanks a lot

SIncerely,