Hello,
Please first make sure that your installation of TELEMAC is correct by following the instructions of the installation procedures described on this website.
Second, you should not have to refer to init/fluvial/matisse when creating a new project with FUDAA. Just create one new project within your own directory structure. You should find information on how to use FUDAA on our colleagues' website.
Hope this helps,
Sébastien.