FWIW - the install wasn't so straight up for me either.
I think my problem was I got moving to fast and missed the prompt to add the data path in ECO. Most instruments I've loaded remember the assigned data paths during installation. Probably not the same issue you had, but after I manually entered it, it worked fine.
The samples sound great, but I haven't been able to find a good 'kit-fit' for them yet...
V