Hello
We can not conclude directly about the nature of the error since the error message is not so explicit. However, it seems that there are some right conflicts. Anyway, the installation seems to have gone far and you can check if Telemac is already working or not, otherwise, you could complete its installation by hand.
Thus, try to launch the commande Telemac2d.py and see if it is working or not (you may add the path to forlder "pytel" before, i.e. <telemac_path>scripts/python27/telemac2d.py)
Actually, if it tells you that "you need to compile at least telemac2d", you have to compile all the system by using the command CompileTelemac.py
I hope that this helps
with my best regards
Riadh ATA