I know I can get them at http://www.3dspark.com/H9_Beta/, [3dspark.com] but is there a page on sidefx.com where I can get them? I only see 9.0.653 for the past several days at the SESI Apprentice download page.

PS: I am having a problem with the 9.0.663 installer for Windows, that's why I am asking..

The official place to get the latest build is via the Download page above under Support. For Windows, I see a 9.0.664 build today.

Thanks a lot, Edward.

I try to keep the 3dspark mirror up to date with the release of Daily Builds as they are made available on the Official Downloads page.