I have similar problems in Ableton adn EX8000. I don’t use snapshots, but load button did not work for me either, as I stated in panels comments on the download page.
However now I think about it I think it worked just the other day I tried to use it, will check again.
I ended up using my hardware synths less and less inspite spending loads of cash on interfacing and synths.
If the panel would work perfectly for me in Ableton it would be really nice though.