I've tried to understand what you are saying to solve the file upload bug. I quote "/wp-content/plugins/easycontact_templates/your_file_dir_name, were your_file_dir_name"..... uhhhh You say what?
Secondly: I have a map named easy-contact-forms not easycontact_templates
This folder contains files attached to contact form entries. If you change the folder name do not forget to copy existent files into the new directory. If you are trying to attach a file to a contact form you receive 'It is not possible to create the folder. Please check folder access credentials', then you need to manually create a directory ../wp-content/plugins/easycontact_templates/your_file_dir_name, were your_file_dir_name - is the file directory name found in this field. Please make sure that the php process has permissions to read from and write to this directory. We also suggest placing 2 simple index.html files to the ../wp-content/plugins/easycontact_templates/your_file_dir_name and ../wp-content/plugins/easycontact_templates directories. This will help to prevent file directory browsing.
Sorry but can you write in plain English how to solve this bug?