A new update - I deleted everything again (all files and directories, dropped the database again) and started over, this time with 1.3.0 - an older version. The sucker works just fine. My thinking was, I'd install the old version and try to upgrade instead.
Before I attempted the upgrade though, I decided to check out my Apache logs to see if anything weird was there. Wouldn't you know it, the same errors are showing up - but the older version is just overlooking it and continuing on, rather than completely shutting down Apache.
So, I've decided not to upgrade as of yet - I've been spending the entire day working on this to no avail. I now - apparently - have a working version, and I need to get started on this client's site. So it looks like - unless I cna get it figured out - I'm just going to have to hack the core files again to get rid of all the tables. Yuk. My work is cut out for me, I guess.
If I ever get this figured out, I'll post back. But hopefully someone else has some alternate suggestions before I start digging into the core stuff again!



