Title: Fatal Error when installing the plugin
Last modified: August 22, 2016

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# Fatal Error when installing the plugin

 *  Resolved [jl_nier](https://wordpress.org/support/users/jln38/)
 * (@jln38)
 * [11 years, 2 months ago](https://wordpress.org/support/topic/fatal-error-when-installing-the-plugin/)
 * Dear Team,
 * I have a Fatal Error when I try to activate the pluggin, saying: “Fatal error:
   Cannot redeclare class ReallySimpleCaptcha in /homepages/11/d284866165/htdocs/
   www/web/wp-content/plugins/really-simple-captcha/really-simple-captcha.php on
   line 30”
 * Do you have any idea of what can be the problem ?
 * Thanks
 * JL
 * [https://wordpress.org/plugins/really-simple-captcha/](https://wordpress.org/plugins/really-simple-captcha/)

Viewing 5 replies - 1 through 5 (of 5 total)

 *  Plugin Author [Takayuki Miyoshi](https://wordpress.org/support/users/takayukister/)
 * (@takayukister)
 * [11 years, 2 months ago](https://wordpress.org/support/topic/fatal-error-when-installing-the-plugin/#post-5913836)
 * Try deactivating all other plugins and switching to the default theme before 
   activating Really Simple CAPTCHA. One of them is wrongly declaring ReallySimpleCaptcha
   class.
 *  Thread Starter [jl_nier](https://wordpress.org/support/users/jln38/)
 * (@jln38)
 * [11 years, 2 months ago](https://wordpress.org/support/topic/fatal-error-when-installing-the-plugin/#post-5913967)
 * Dear Takayuki,
 * Thank you very much for your quick reply; I switch back to my default theme and
   it solves the issue.
    Thank you again very much for yout help and your great 
   job.
 * JL
 *  [Mcollie64](https://wordpress.org/support/users/mcollie64/)
 * (@mcollie64)
 * [11 years, 2 months ago](https://wordpress.org/support/topic/fatal-error-when-installing-the-plugin/#post-5914159)
 * Good morning. I’m having this same issue when I try to install the ReallySimpleCaptcha
   plugin to run in conjunction with the Contact 7 plugin.
 * When you advise to turn off all plugins and switch to default theme for the install,
   do you then turn everything back on after installing ReallySimpleCaptcha? My 
   site is running an ecommerce wordpress theme that uses woo commerce for the shopping
   cart, so I have quite a few plugins and in-depth theme to “turn off/on”.
 * I’m running the most recent versions of WordPress and Contact 7.
 * Thanks in advance for the help.
    MC
 *  Thread Starter [jl_nier](https://wordpress.org/support/users/jln38/)
 * (@jln38)
 * [11 years, 2 months ago](https://wordpress.org/support/topic/fatal-error-when-installing-the-plugin/#post-5914162)
 * Hi Mcollie64,
 * Actually, here is what I did exactly:
    – Install the ReallySimpleCaptcha plugin–
   Turn all plugins off – Switch back to my default theme – Activate the ReallySimpleCaptcha
   plugin – Switch to my correct theme – Turn all plugins on
 * My advice:
    – Turn all plugins off and try to activate the ReallySimpleCaptcha
   plugin.
 * If you still have the fatal error:
    – then keep all plugins turned off and switch
   back to your default theme – Activate your ReallySimpleCaptcha plugin and it 
   should work.
 * Jean-Luc
 *  [Mcollie64](https://wordpress.org/support/users/mcollie64/)
 * (@mcollie64)
 * [11 years, 2 months ago](https://wordpress.org/support/topic/fatal-error-when-installing-the-plugin/#post-5914163)
 * Thanks for the step-by-step. Unfortunately what worked for you didn’t work for
   me and actually “broke” my website. Thank god for back ups!
 * So I’m not really sure how to proceed from here. Not sure if it has something
   to do with my theme or user error!

Viewing 5 replies - 1 through 5 (of 5 total)

The topic ‘Fatal Error when installing the plugin’ is closed to new replies.

 * ![](https://ps.w.org/really-simple-captcha/assets/icon-256x256.png?rev=1047241)
 * [Really Simple CAPTCHA](https://wordpress.org/plugins/really-simple-captcha/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/really-simple-captcha/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/really-simple-captcha/)
 * [Active Topics](https://wordpress.org/support/plugin/really-simple-captcha/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/really-simple-captcha/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/really-simple-captcha/reviews/)

## Tags

 * [fatal error](https://wordpress.org/support/topic-tag/fatal-error/)
 * [redeclare](https://wordpress.org/support/topic-tag/redeclare/)

 * 5 replies
 * 3 participants
 * Last reply from: [Mcollie64](https://wordpress.org/support/users/mcollie64/)
 * Last activity: [11 years, 2 months ago](https://wordpress.org/support/topic/fatal-error-when-installing-the-plugin/#post-5914163)
 * Status: resolved