Title: [Plugin: Posts 2 Posts] Error on activation – upgrade from 1.0
Last modified: August 20, 2016

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# [Plugin: Posts 2 Posts] Error on activation – upgrade from 1.0

 *  Resolved [sqlwiz](https://wordpress.org/support/users/sqlwiz/)
 * (@sqlwiz)
 * [14 years, 6 months ago](https://wordpress.org/support/topic/plugin-posts-2-posts-error-on-activation-upgrade-from-10/)
 * Hello,
 * I’ve been trying out V1.0 of this plugin. I just deactivated that version, downloaded
   V1.1 and tried to activate the plugin. I get the following error:
 * [01-Dec-2011 19:38:47] PHP Fatal error: Call to undefined function scb_register_table()
   in …/wp-content/plugins/posts-to-posts/core/storage.php on line 11
 * What procedure should be followed to upgrade the plugin?
 * Thanks.
 * [http://wordpress.org/extend/plugins/posts-to-posts/](http://wordpress.org/extend/plugins/posts-to-posts/)

Viewing 7 replies - 1 through 7 (of 7 total)

 *  Plugin Author [scribu](https://wordpress.org/support/users/scribu/)
 * (@scribu)
 * [14 years, 6 months ago](https://wordpress.org/support/topic/plugin-posts-2-posts-error-on-activation-upgrade-from-10/#post-2426837)
 * It’s probably a conflict with an older plugin of mine.
 * 1. Deactivate all plugins.
    2. Activate P2P. 3. Activate all the other plugins,
   one by one.
 *  Thread Starter [sqlwiz](https://wordpress.org/support/users/sqlwiz/)
 * (@sqlwiz)
 * [14 years, 6 months ago](https://wordpress.org/support/topic/plugin-posts-2-posts-error-on-activation-upgrade-from-10/#post-2426840)
 * Okay, I tried that, no joy. I’ll have drop back to 1.0
 *  Thread Starter [sqlwiz](https://wordpress.org/support/users/sqlwiz/)
 * (@sqlwiz)
 * [14 years, 6 months ago](https://wordpress.org/support/topic/plugin-posts-2-posts-error-on-activation-upgrade-from-10/#post-2426841)
 * Hmmm, with plugins off, I got a different error.
 * [01-Dec-2011 19:55:58] PHP Fatal error: Class ‘scbAdminPage’ not found in …/wp-
   content/plugins/posts-to-posts/scb/BoxesPage.php on line 5
 *  Plugin Author [scribu](https://wordpress.org/support/users/scribu/)
 * (@scribu)
 * [14 years, 6 months ago](https://wordpress.org/support/topic/plugin-posts-2-posts-error-on-activation-upgrade-from-10/#post-2426866)
 * Are you sure you deactivated ALL of them? No network-activate plugins? No files
   inside mu-plugins?
 * Also, maybe some files were not downloaded when you upgraded. Make sure you have
   an `scb` directory inside the posts-to-posts directory and that it contains all
   the files listed here:
 * [http://plugins.trac.wordpress.org/browser/posts-to-posts/tags/1.1/scb/](http://plugins.trac.wordpress.org/browser/posts-to-posts/tags/1.1/scb/)
 *  [vsiguero](https://wordpress.org/support/users/vsiguero/)
 * (@vsiguero)
 * [14 years, 6 months ago](https://wordpress.org/support/topic/plugin-posts-2-posts-error-on-activation-upgrade-from-10/#post-2426976)
 * Hi Scribu, I was in the same problem, and I detected that it has incompatibility
   issues with your WP-PageNavi plugin, uhmmm… maybe because it loads your “scb”
   library twice when both plugins are installed?
 *  Plugin Author [scribu](https://wordpress.org/support/users/scribu/)
 * (@scribu)
 * [14 years, 6 months ago](https://wordpress.org/support/topic/plugin-posts-2-posts-error-on-activation-upgrade-from-10/#post-2426993)
 * Yeah, the problem was that it was loading the older version of the library from
   PageNavi. Should be fixed in the [development version](http://downloads.wordpress.org/plugin/posts-to-posts.zip)(
   1.1.1-alpha).
 *  Thread Starter [sqlwiz](https://wordpress.org/support/users/sqlwiz/)
 * (@sqlwiz)
 * [14 years, 6 months ago](https://wordpress.org/support/topic/plugin-posts-2-posts-error-on-activation-upgrade-from-10/#post-2427049)
 * Ah, I came back to mention WP-PageNavi and there’s a new release! I think I had
   an additional problem today in that W3TC object cache is enabled in the admin
   here due to some dashboard feeds that need to be cached. When I cleared cache
   after disabling WP-PageNavi tonight, I was able to install v1.1. Anyway on to
   v1.1.1.
 * By the way congrats on reaching the 1.0 milestone, even though that is now old
   news, it is the reason we are evaluating this very useful plugin.
 * Tomorrow, I want to get WP-PageNavi working with Post2Post on a master-detail
   page, I’ll share the results.

Viewing 7 replies - 1 through 7 (of 7 total)

The topic ‘[Plugin: Posts 2 Posts] Error on activation – upgrade from 1.0’ is closed
to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/posts-to-posts_7a8e9d.svg)
 * [Posts 2 Posts](https://wordpress.org/plugins/posts-to-posts/)
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 * [Unresolved Topics](https://wordpress.org/support/plugin/posts-to-posts/unresolved/)
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 * 7 replies
 * 3 participants
 * Last reply from: [sqlwiz](https://wordpress.org/support/users/sqlwiz/)
 * Last activity: [14 years, 6 months ago](https://wordpress.org/support/topic/plugin-posts-2-posts-error-on-activation-upgrade-from-10/#post-2427049)
 * Status: resolved