OP, I think you may have gotten the two versions mixed up.

I tried both 64-bit versions: R9 LXDE and R9 Microwatt.

R9 LXDE is the version that has an "Install wattOS-R9" icon on the desktop. The wizard seems to work up until after the user creation step, and then it fails with a "the installer crashed" error.

R9 Microwatt is the version that does not have an "Install wattOS-R9" icon on the desktop because there is no real desktop. What you do is press the hotkeys to open PCMan File Manager, and then right there in the /home/guest directory (first folder you see) is the "Install wattOS-R9" icon. HOWEVER, I was not able to get the install wizard to succeed from start to finish--it failed in several places, first right after partitioning, second while trying to sync the time.

Thus, both 64-bit versions' install wizards fail to install to the hard drive. My guess is that the 32-bit versions do work properly and that they didn't test the 64-bit versions enough.

I'm going back to R8 Microwatt 32-bit for now.