CTransifex fails to create the zip files if there is no files for site part.
Verified with different projects
Ctransifex contacts project fine, locate resources and then it doesn't move to the next step.
If creating a dummy file on the project for "site" then all works fine and the ZIP are created.
There are lots of projects with just admin files and I can't use it if I'm not an owner to create a dummy file at transifex.
Something bad here!!