Managed to upgrade without having Gengo bitch out. Here’s what I did:
- Backed up both DB and files.
- Deactivated all plugins except Gengo
- Re-configured Gengo settings and applied changes.
- Cleared browser cache.
- Viewed site. It worked.
If it doesn’t work, try playing around with the Language settings but remember to clear your browser cache every time you do this. Gengo gives a cookie to your browser to make it remember stuff.
WordPress 2.7 itself is pretty good. The writing interface is much better, reason alone to make the jump.