Title: [Plugin: Knowledge Building] Error on Activation plugin, Localhost test environment.
Last modified: August 19, 2016

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# [Plugin: Knowledge Building] Error on Activation plugin, Localhost test environment.

 *  [neilogic](https://wordpress.org/support/users/neilogic/)
 * (@neilogic)
 * [16 years, 8 months ago](https://wordpress.org/support/topic/plugin-knowledge-building-error-on-activation-plugin-localhost-test-environment/)
 * I got this error while I try to activate this plugin. Any help would be appreciated.
   I tried this on my localhost installation. Using WordPress 2.8.2.
 *     ```
       Plugin could not be activated because it triggered a fatal error.
   
       Warning: dir(/var/www/wp/wp-content/plugins/knowledgebuilding/kbsets) [function.dir]: failed to open dir: No such file or directory in /var/www/wp/wp-content/plugins/knowledge-building/knowledgebuilding.php on line 38
   
       Fatal error: Call to a member function read() on a non-object in /var/www/wp/wp-content/plugins/knowledge-building/knowledgebuilding.php on line 39
       ```
   
 * [http://wordpress.org/extend/plugins/knowledge-building/](http://wordpress.org/extend/plugins/knowledge-building/)

Viewing 11 replies - 1 through 11 (of 11 total)

 *  [Nutrawee](https://wordpress.org/support/users/zeally/)
 * (@zeally)
 * [16 years, 8 months ago](https://wordpress.org/support/topic/plugin-knowledge-building-error-on-activation-plugin-localhost-test-environment/#post-1210844)
 * change folder’s name from knowledge-building to knowledgebuilding will solve 
   this problem but I think the creator will release next patch soon
 *  Thread Starter [neilogic](https://wordpress.org/support/users/neilogic/)
 * (@neilogic)
 * [16 years, 8 months ago](https://wordpress.org/support/topic/plugin-knowledge-building-error-on-activation-plugin-localhost-test-environment/#post-1210978)
 * Thanks for the reply! Cheers
 *  [Tarmo Toikkanen](https://wordpress.org/support/users/tatti/)
 * (@tatti)
 * [16 years, 8 months ago](https://wordpress.org/support/topic/plugin-knowledge-building-error-on-activation-plugin-localhost-test-environment/#post-1211057)
 * Hi guys. Sorry for the inconvenience about the folder name. I’ve just committed
   version 0.4 which should have this fixed, and also handles Windows path names
   correctly. Any other problems? Just let me know. Cheers!
 *  [j0hnnyb0y84](https://wordpress.org/support/users/j0hnnyb0y84/)
 * (@j0hnnyb0y84)
 * [16 years, 5 months ago](https://wordpress.org/support/topic/plugin-knowledge-building-error-on-activation-plugin-localhost-test-environment/#post-1211141)
 * Great plugin! I’m trying to use it on my site, but I am having problems. I followed
   your instructions word for word; however, when I try to comment on a post where
   the Knowledge Building plugin is activated for, the comment field is disabled
   and I cannot submit anything. However, I can comment within post categories that
   are not directed by the plugin. Do you have any suggestions?
 * Thank you!
 *  [Tarmo Toikkanen](https://wordpress.org/support/users/tatti/)
 * (@tatti)
 * [16 years, 5 months ago](https://wordpress.org/support/topic/plugin-knowledge-building-error-on-activation-plugin-localhost-test-environment/#post-1211142)
 * Hi Johnny. The comment field is disabled until you first select a knowledge type
   from the drop-down list above it. And press the button next to it. You’ll then
   get scaffolding information, and the comment box will be enabled.
 * If you can’t see a drop-down list above the comment box, then your theme is probably
   messing with the plugin. You should only use plugins that use the WordPress normal
   Walker method of displaying comments.
 *  [j0hnnyb0y84](https://wordpress.org/support/users/j0hnnyb0y84/)
 * (@j0hnnyb0y84)
 * [16 years, 5 months ago](https://wordpress.org/support/topic/plugin-knowledge-building-error-on-activation-plugin-localhost-test-environment/#post-1211143)
 * Thanks for the quick reply!
 * I am able to see a drop-down list above the comment box, and once I click the“
   Add Comment” button, Internet Explorer reports this error message:
 * Line:29
    Char: 4782 Error: ‘url’ is null or not an object Code: 0
 * Perhaps I should try out the default wordpress theme as you suggested. My current
   them does use Walker. Do you have any possible suggestions?
 * Thank you!
 * Johnny
 *  [j0hnnyb0y84](https://wordpress.org/support/users/j0hnnyb0y84/)
 * (@j0hnnyb0y84)
 * [16 years, 5 months ago](https://wordpress.org/support/topic/plugin-knowledge-building-error-on-activation-plugin-localhost-test-environment/#post-1211144)
 * I tried a different theme and received the same error message. I select a knowledge
   type, hit “Add Comment”, and that’s when I notice the error message. Maybe I 
   have a conflict with another plugin?
 *  [j0hnnyb0y84](https://wordpress.org/support/users/j0hnnyb0y84/)
 * (@j0hnnyb0y84)
 * [16 years, 5 months ago](https://wordpress.org/support/topic/plugin-knowledge-building-error-on-activation-plugin-localhost-test-environment/#post-1211145)
 * Okay! I got it figured it out… I disabled a calendar plugin that integrated Google
   calendars. Now, I am able to successfully post.
 * Upon posting, I try to change the view of Show Notes “as thread”, “by knowledge
   type”, “by person”, and “by date.”
 * However, when I click any of these, IE reports this error message:
 * Line: 100
    Char: 4 Error: ‘console’ is undefined
 * I’m sorry to be difficult! Any suggestions are welcome.
 *  [j0hnnyb0y84](https://wordpress.org/support/users/j0hnnyb0y84/)
 * (@j0hnnyb0y84)
 * [16 years, 5 months ago](https://wordpress.org/support/topic/plugin-knowledge-building-error-on-activation-plugin-localhost-test-environment/#post-1211146)
 * Update: it works perfect in Google Chrome, but it is in Firefox and IE that I
   receive that error message. (‘console’) is undefined.
 *  [Tarmo Toikkanen](https://wordpress.org/support/users/tatti/)
 * (@tatti)
 * [16 years, 5 months ago](https://wordpress.org/support/topic/plugin-knowledge-building-error-on-activation-plugin-localhost-test-environment/#post-1211147)
 * Right, sorry about that. I had left some debug messages in there. They work on
   Chrome and on Firefox 3.x, but older Firefoxes and IE seem to get upset by them.
   Version 0.5.2 is now tagged, and has this fixed.
 * I still need to further optimize the sorting code – it does way too many jquery
   queries while sorting. When you have nearly 100 comments, things start getting
   way too slow…
 *  [j0hnnyb0y84](https://wordpress.org/support/users/j0hnnyb0y84/)
 * (@j0hnnyb0y84)
 * [16 years, 5 months ago](https://wordpress.org/support/topic/plugin-knowledge-building-error-on-activation-plugin-localhost-test-environment/#post-1211148)
 * You’re doing a great job – your plugin has been very useful in my classroom the
   past few days! Thank you!

Viewing 11 replies - 1 through 11 (of 11 total)

The topic ‘[Plugin: Knowledge Building] Error on Activation plugin, Localhost test
environment.’ is closed to new replies.

 * 11 replies
 * 4 participants
 * Last reply from: [j0hnnyb0y84](https://wordpress.org/support/users/j0hnnyb0y84/)
 * Last activity: [16 years, 5 months ago](https://wordpress.org/support/topic/plugin-knowledge-building-error-on-activation-plugin-localhost-test-environment/#post-1211148)
 * Status: not resolved

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