dgdltd911

1. disable all plugins, especially auto-upgrade and old ozh menu, maybe others. so the best way is disalbe all.
2. using default themes (not sure, but to be safe, a simple way)
3. upload all code files of V2.7, using overwrite, or after moving your old version code files to other directory, something like “/backup-v26x/”
4. http: //xxxxxx.com/wp-admin/upgrade.php
to upgrade your V2.6.x to V2.7
5. OK

some plugin is abnormal under v2.7, so the best way is just using old database, not codes. remember to backup it first!

I have solved the issue, thanks Otto42.
First disable all of plugins, then upload V2.7 codes, after succeed upgrade, enable plugins, some incompitalbe.

I don’t like three column style.

Anybody want detail steps pls refer
https://www.laotudou.com/wordpress-interface-27.html

Fatal error: Call to undefined function wp_user_settings() in /ww……er.php on line 14

After “Don’t use an automatic upgrade plugin”, a little change.

There are some other plugins incompatible, I lost my interesting.

so am I.

I think maybe plugins or themes problem.

The result maybe different, if we deactivate all plugins and use default theme, then upgrade.

But I decide to use V2.6.5 after upgrade failure.

Refer:
https://www.laotudou.com/wordpress-fatal-error-wp_remote_request.html