I have a Lutron Grafik Eye light control system.
It works fine with the Pronto.
I just purchased a Neo and it will not learn the IR codes.

One solution is to try and convert Pronto file (ccf) to a Neo file (ncf).

Can anyone help ?

The ccf file can be downloaded from Lutron:
[Link: lutron.com]
or
search for pronto on the Lutron web-page