My problem: upgrading to WordPress 3.2 worked flawless, the sites worked as before, admin is even nicer than before.
I disabled all plugins, switched to twentyten and twenty eleven, ‚reset‘ plugins folder, no chance.
So I had a look at my sites error log and found:
PHP Fatal error: Call to undefined function json_encode() in /srv/www/vhosts/mysite.com/httpdocs/wp-admin/includes/class-wp-list-table.php on line 905, referer: http://mysite.com/wp-admin/edit.php
Clearly to see: undefined function json_encode() called by wp-admin/edit.php
Checking my phpinfo() there was no json to see! So on my plesk 9.5.4 json is not enabled!?
The vServer is running on plesk 9.5.4 on a suse 10.3 with php 5.2.11-0.1
To enable this json stuff I found you need json.so and json.ini in folders mentioned below.
Looking on the servers root there is no json.so in \usr\lib\php5\extensions\ and there is no json.ini in \etc\php5\conf.d\
Lucky I found the correct rpm packet ‚php5-hash-5.2.11-0.1.i586.rpm‘ here:
I downloaded this .rpm, opened up with 7-zip and copied the two included files to the folders they should be in. (using winscp)
After a Restart VPS in my Virtuozzo Panel I went back to my sites phpinfo to find a new entry:
json support enabled
json version 1.2.1
Now back to the dashboard of WordPress 3.2 checked if the visual editor in Edit Post is working now? YESSSS!
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