Title: Debug warning
Last modified: August 21, 2016

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# Debug warning

 *  Resolved [KTS915](https://wordpress.org/support/users/kts915/)
 * (@kts915)
 * [12 years, 5 months ago](https://wordpress.org/support/topic/debug-warning/)
 * This is an absolutely fantastic plugin. I have used it over the past semester
   for a class, and it has been very useful.
 * I’m now debugging what I have created over the semester, and I find that this
   plugin produces the following warning when activated:
 * The plugin generated 128 characters of unexpected output during activation. If
   you notice “headers already sent” messages, problems with syndication feeds or
   other issues, try deactivating or removing this plugin.
 * I don’t know what that means, but I’m sure you do!
 * [http://wordpress.org/plugins/side-matter/](http://wordpress.org/plugins/side-matter/)

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Plugin Author [setzer](https://wordpress.org/support/users/setzer/)
 * (@setzer)
 * [12 years, 5 months ago](https://wordpress.org/support/topic/debug-warning/#post-4413725)
 * Hi KTS915,
 * I haven’t yet determined the source of this error message, but after upgrading
   to 3.8 it shows up for me as well. The plugin still seems to work fine, but this
   will go on my list of fixes for the next update. Thanks for bringing it to my
   attention!
 *  Thread Starter [KTS915](https://wordpress.org/support/users/kts915/)
 * (@kts915)
 * [12 years, 5 months ago](https://wordpress.org/support/topic/debug-warning/#post-4413726)
 * Thank you, setzer. I have found that the upgrade to 3.8 has produced a ton of
   error messages for different plugins that I use, though nearly all seem still
   to work OK. (Unfortunately, not all.) There must be a lot going on behind the
   scenes in 3.8.
 *  Plugin Author [setzer](https://wordpress.org/support/users/setzer/)
 * (@setzer)
 * [12 years, 5 months ago](https://wordpress.org/support/topic/debug-warning/#post-4413737)
 * OK, I’ve now isolated and fixed the problem. This error message will no longer
   appear in the next version of Side Matter. Thanks again for the head’s up.

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘Debug warning’ is closed to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/side-matter_dbd4c7.svg)
 * [Side Matter](https://wordpress.org/plugins/side-matter/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/side-matter/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/side-matter/)
 * [Active Topics](https://wordpress.org/support/plugin/side-matter/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/side-matter/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/side-matter/reviews/)

 * 3 replies
 * 2 participants
 * Last reply from: [setzer](https://wordpress.org/support/users/setzer/)
 * Last activity: [12 years, 5 months ago](https://wordpress.org/support/topic/debug-warning/#post-4413737)
 * Status: resolved