Edited to Add: Nevermind. No problem. I'm just not patient enough.
No sign of this problem in the forum or FAQ, so I'm guessing it's something specific to my configuration. Installing the Suite Standard 1.5.2, from a Windows XP Pro SP 3 machine, to a typical 16GB USB drive.
The installation ran for about 5 minutes, then hung at the point of "Extract: xul.dll... 100%". Installation process is locked up at this point; cannot even cancel it. Have to cancel it through the Task Manager.
Ran the install package initially, from the USB drive I was installing to. Tried a second time, with the install package located on the PC's primary hard drive. Same result.
Deleted and re-downloaded the install package to the PC, re-ran it. Same result.
Doh!@#! Uhhh ... nevermind. Apparently I'm not patient enough. Waited about 10 minutes each time, when it hung up at this point. Last time, I just left it, and it just woke back up again. Slow installation, for some reason, but it seems to be working fine now.