[wp-testers] Problem upgrading to RC1

[Andrew Nacin]

On Tue, Nov 27, 2012 at 11:57 AM, Brian Layman
<wp-testers at thecodecave.com>wrote:

> I've not been following closely enough to know if this is a reported issue
> or not.
>
> On two of the sites I've upgraded to 3.5 (one on the last beta and one on
> rc1) that were running wc3, I could not get back into the wp-admin.  Every
> time I tried to get into the admin, it gave me a message saying the
> database was already upgraded and hitting continue then took me to the home
> page for that site.  The solution to it seemed to be to rename all the w3tc
> files and dirs to disable the plugin and rename them back once I got into
> the admin successfully.  This could be a problem as many larger site are
> running w3tc and may not disable/upgrade it before getting 3.5.


We aimed to fix this in 3.5, though if you were using w3tc as an object
caching backend, I'm not sure what the issue would be. Some reading:
 * http://core.trac.wordpress.org/ticket/21745
 * http://core.trac.wordpress.org/ticket/22258