I did this:
1. Installed LGB 0.9 over 0.8 without wipe. No issues, phone worked perfectly.
2. Installed AOSP Liberty (Black+Green) theme. No issues, phone worked perfectly.
3. Went into Liberty Toolbox and changed the boot logo and the text in Liberty Mods. Asked for restart, I told it to restart later.
4. Tried to click Liberty Tweaks. Got non-English Force Close.
After that, all my apps started force closing. The OS basically chucked its innards. I tried restarting the phone now I'm stuck on the boot logo and I think I'm gonna have to SBF.
Color me annoyed. This is a bug report. And a warning. I'm not sure if it was the toolbox, the ROM or the theme. So tread carefully w/ 0.9. VERY carefully. I might try this again today without the theme if I have time.
EDIT: Confirm I did have to SBF. No coming back from that one. Thank God I made a backup first!