Trouble after 4.09m install

[woodchuck]

The 4.08_to_4.09b_switcher called Switcher for Smog doesn't apply to Mods.
Once I get my trusty 4.08 working again I'm gonna BACKITUP and then try out the mods.

I tried deleting the 6 files that were added by Switcher for Smog. That didn't help.

I've also tried reinstalling 4.08m over the current, malfunctioning install.
The splash screen still just briefly starts in 4.08m and then disappears.

Do I need to delete everything and drag out all my original disks (I've bought them all over the years) and try to reinstall and re-upgrade again from scratch?

Yikes!

Thanks