Title: Plugin Class & Element Names
Last modified: August 22, 2016

---

# Plugin Class & Element Names

 *  Resolved [jumpstartcarrie](https://wordpress.org/support/users/jumpstartcarrie/)
 * (@jumpstartcarrie)
 * [11 years, 4 months ago](https://wordpress.org/support/topic/plugin-class-element-names/)
 * Is it possible to rename the classes/elements that are prefixed with “cmb” as
   I have discovered that there is a conflict on certain themes (e.g. Tfingi) that
   utilise the Custom Metaboxes feature and also use the cmb prefix for their classes,
   functions etc.?
 * I have had to manually do a bulk find and replace to get your plugin working 
   with these themes, so it would be great if you could roll out a version with 
   different naming conventions to prevent the conflict.
 * Many thanks! 🙂
 * [https://wordpress.org/plugins/timeline-express/](https://wordpress.org/plugins/timeline-express/)

Viewing 4 replies - 1 through 4 (of 4 total)

 *  Plugin Author [Evan Herman](https://wordpress.org/support/users/eherman24/)
 * (@eherman24)
 * [11 years, 4 months ago](https://wordpress.org/support/topic/plugin-class-element-names/#post-5662837)
 * Hi,
 * You’re issue is most likely related to your theme using an outdated version of
   the CMB class.
 * I’ve had other users report conflicts with Timeline Express and a few other plugins
   using the CMB class. I originally had re-named and customized the CMB class file
   to prevent conflicts, which was what was causing the issue.
 * Currently CMB is on a stable version 1.2.0. Do you know what version your theme
   is using?
 * I’ve used the plugin along with other plugins and themes running CMB , nad have
   not had an issue. The class file only gets initialized if the class doesn’t already
   exist. So multiple plugins and themes running CMB should only ever initialize
   it one time.
 * Thanks,
    Evan
 *  Thread Starter [jumpstartcarrie](https://wordpress.org/support/users/jumpstartcarrie/)
 * (@jumpstartcarrie)
 * [11 years, 4 months ago](https://wordpress.org/support/topic/plugin-class-element-names/#post-5662846)
 * Thanks for the extremely fast response!
 * Looks like the latest version of the theme is still using version 1.0 of the 
   CMB class, so as you point out, that could be the issue – results in a blank 
   page when trying to edit content and a “Cannot redeclare class cmb_Meta_Box” 
   error message (amongst others – all related to cmb elements) on the error log.
 * Any thoughts as to how to resolve this?
 *  Plugin Author [Evan Herman](https://wordpress.org/support/users/eherman24/)
 * (@eherman24)
 * [11 years, 4 months ago](https://wordpress.org/support/topic/plugin-class-element-names/#post-5662847)
 * Yea that’s what was happening with mine as well. I was using an older class in
   this plugin, and other plugins were using updated versions and there was a conflict.
 * I wouldn’t be 100% sure but my best guess is to update the CMB class file and
   all the helper classes bundled with it. One issue I ran into, was that the newer
   versions had a different format for registering meta boxes so I had to re-write
   large parts of the plugin.
 * That may be why the theme author hasn’t updated the CMB class in the theme. I
   would reach out to them and ask them what’s going on with the CMB class being
   outdated.
 * Thanks,
    Evan
 *  Thread Starter [jumpstartcarrie](https://wordpress.org/support/users/jumpstartcarrie/)
 * (@jumpstartcarrie)
 * [11 years, 4 months ago](https://wordpress.org/support/topic/plugin-class-element-names/#post-5662859)
 * Ah, that’s a pain. It does seem a very distinct possibility that the theme author
   hasn’t updated the CMB class for the exact reason you state (I wish these things
   could be backwards compatible)!
 * I can only hope that the theme developer is prepared to upgrade then, as otherwise
   I’m a bit stuck from the seem of things (which would be a shame, as this is a
   really nice plugin you’ve written).

Viewing 4 replies - 1 through 4 (of 4 total)

The topic ‘Plugin Class & Element Names’ is closed to new replies.

 * ![](https://ps.w.org/timeline-express/assets/icon-256x256.png?rev=1007462)
 * [Timeline Express](https://wordpress.org/plugins/timeline-express/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/timeline-express/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/timeline-express/)
 * [Active Topics](https://wordpress.org/support/plugin/timeline-express/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/timeline-express/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/timeline-express/reviews/)

## Tags

 * [conflict](https://wordpress.org/support/topic-tag/conflict/)

 * 4 replies
 * 2 participants
 * Last reply from: [jumpstartcarrie](https://wordpress.org/support/users/jumpstartcarrie/)
 * Last activity: [11 years, 4 months ago](https://wordpress.org/support/topic/plugin-class-element-names/#post-5662859)
 * Status: resolved