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Hi,

I have upgraded our site from 1.6.9 to 2.5.0.  Thing complete successfully and I can log into the backend, which appears fine.  However, when I try to view the front end, I see this:

A PHP Error was encountered

Severity: Notice

Message: Channel::parse_related_entries(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition “DB_Cache” of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide a __autoload() function to load the class definition

Filename: channel/mod.channel.php

Line Number: 438
Fatal error: Channel::parse_channel_entries(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition “DB_Cache” of the object you are trying to operate on was loaded _before_ unserialize() gets called or provide a __autoload() function to load the class definition in /www/eh20796/public_html/system/expressionengine/modules/channel/mod.channel.php on line 3356

I have restored to the old database and retried the upgrade, but ended with the same result.

Aha!  I cleared the caches as directed here (http://ellislab.com/forums/viewthread/172390/) and it did the trick.

Hi Tim,

Glad to hear it! Nice work.

If you need anything else, please just let us know by opening a new thread.

Cheers,