When I try to upload an image with the info.magnolia.ui.form.field.definition.BasicUploadFieldDefinition Field the next exceptions are thrown: com.vaadin.server.UploadException and java.lang.IllegalArgumentException: The directory does not exist or is not writeable!

IMPORTANT NOTE: I have admin permissions to write any folder. Also, I'm using the MGNL Project Archetype.

This exception is produced only in my Development Environment, exactly in the MGNL Webapp that I use to create my templates.