Title: Fatal Error – Theme Activation Last modified: March 26, 2017 --- # Fatal Error – Theme Activation * [moniquebentham](https://wordpress.org/support/users/moniquebentham/) * (@moniquebentham) * [10 years ago](https://wordpress.org/support/topic/fatal-error-theme-activation/) * Hi, I installed a new theme which I decided I was not going to use. I deleted the plugins that came with it and changed my theme. After activating the theme I received this message: * Fatal error: Cannot redeclare tgmpa() (previously declared in /home/livetgej/ public_html/wp-content/plugins/iiStores/modules/class-tgm-plugin-activation.php: 965) in /home/livetgej/public_html/wp-content/themes/mts_gridblog/functions/plugin- activation.php on line 1045 * Can someone please help me fix this issue as I am no savvy at all with c-panel and code!! Viewing 8 replies - 1 through 8 (of 8 total) * Moderator [t-p](https://wordpress.org/support/users/t-p/) * (@t-p) * [10 years ago](https://wordpress.org/support/topic/fatal-error-theme-activation/#post-7357502) * your “iiStores” plugin seems to be the error. * Is this the plugin you deleted? * If not, try deleting/uninstalling/renaming the folder of this plugin using, [FTP ](http://codex.wordpress.org/FTP_Clients), or your web-host’s cPanel or whatever file management application your host provides( no Dashboard access required). * If you have already deleted it and still getting this error, then try [resetting the plugins folder](http://codex.wordpress.org/FAQ_Troubleshooting#How_to_deactivate_all_plugins_when_not_able_to_access_the_administrative_menus.3F) by [FTP](http://codex.wordpress.org/FTP_Clients). Sometimes, an apparently inactive plugin can still cause problems. * Thread Starter [moniquebentham](https://wordpress.org/support/users/moniquebentham/) * (@moniquebentham) * [10 years ago](https://wordpress.org/support/topic/fatal-error-theme-activation/#post-7357538) * I purchased iiStores Plugin a few days ago and I did not delete it so I do no know why it is the problem. I will do that and see if it fixes the problem Thank You * [Juliette Reinders Folmer](https://wordpress.org/support/users/jrf/) * (@jrf) * [10 years ago](https://wordpress.org/support/topic/fatal-error-theme-activation/#post-7357539) * Hi Monique, * Both the iiStores plugin as well as the MTS Gridblog theme use an external library called TGMPA. As both are commercial, I cannot tell which versions they use, other than that at least one of them will be a (very) out-of-date version and they really should upgrade to the latest version. The out-of-date version is causing the issue. * In the mean time, I’ll try and help you get things up & working again. You can download the latest version of TGMPA yourself here: [http://tgmpluginactivation.com/download/](http://tgmpluginactivation.com/download/)–( hint: click on the ‘zipfile’ link underneath the form) Unzip the file after the download has finished and just take the class-tgm-plugin-activation.php file and replace the existing one in the theme (via FTP) which you can find here: `/ wp-content/themes/mts_gridblog/functions/plugin-activation.php`. * And if you want to be sure that the plugin also uses the most up-to-date version, you can safely replace the version in the plugin as well ( `wp-content/plugins/ iiStores/modules/class-tgm-plugin-activation.php` ) * Once you’ve done that, all should be fine again. * Please *do* inform both the theme as well as the plugin author of this and ask them to upgrade the version of TGMPA they include in their product. * Hope this helps. * Smile, Juliette * Thread Starter [moniquebentham](https://wordpress.org/support/users/moniquebentham/) * (@moniquebentham) * [10 years ago](https://wordpress.org/support/topic/fatal-error-theme-activation/#post-7357540) * I did what you said to do and I am now receiving this message: Warning: include_once( functions/plugin-activation.php): failed to open stream: No such file or directory in /home/livetgej/public_html/wp-content/themes/mts_gridblog/functions.php on line 299 * Warning: include_once(): Failed opening ‘functions/plugin-activation.php’ for inclusion (include_path=’.:/usr/lib/php:/usr/local/lib/php’) in /home/livetgej/ public_html/wp-content/themes/mts_gridblog/functions.php on line 299 * Warning: Cannot modify header information – headers already sent by (output started at /home/livetgej/public_html/wp-content/themes/mts_gridblog/functions.php:299) in /home/livetgej/public_html/wp-login.php on line 390 * Warning: Cannot modify header information – headers already sent by (output started at /home/livetgej/public_html/wp-content/themes/mts_gridblog/functions.php:299) in /home/livetgej/public_html/wp-login.php on line 403 * Warning: Cannot modify header information – headers already sent by (output started at /home/livetgej/public_html/wp-content/themes/mts_gridblog/functions.php:299) in /home/livetgej/public_html/wp-includes/pluggable.php on line 898 * Warning: Cannot modify header information – headers already sent by (output started at /home/livetgej/public_html/wp-content/themes/mts_gridblog/functions.php:299) in /home/livetgej/public_html/wp-includes/pluggable.php on line 899 * Warning: Cannot modify header information – headers already sent by (output started at /home/livetgej/public_html/wp-content/themes/mts_gridblog/functions.php:299) in /home/livetgej/public_html/wp-includes/pluggable.php on line 900 * Warning: Cannot modify header information – headers already sent by (output started at /home/livetgej/public_html/wp-content/themes/mts_gridblog/functions.php:299) in /home/livetgej/public_html/wp-includes/pluggable.php on line 1171 * Should I just delete both the plugin and the theme from my file directory? * Thread Starter [moniquebentham](https://wordpress.org/support/users/moniquebentham/) * (@moniquebentham) * [10 years ago](https://wordpress.org/support/topic/fatal-error-theme-activation/#post-7357541) * All fixed! I just had to rename the file! Thank You * [Juliette Reinders Folmer](https://wordpress.org/support/users/jrf/) * (@jrf) * [10 years ago](https://wordpress.org/support/topic/fatal-error-theme-activation/#post-7357542) * Ah yes, I hadn’t noticed the theme author had changed the name of the file. Glad to hear it’s fixed now. * [paraima](https://wordpress.org/support/users/paraima/) * (@paraima) * [9 years, 2 months ago](https://wordpress.org/support/topic/fatal-error-theme-activation/#post-8956851) * Hello What should I do with it Fatal error: Cannot redeclare tgmpa() (previously declared in /home/amortgageinsuran/public_html/wp-content/plugins/contact-form- 7-designer/class-tgm-plugin-activation.php:1041) in /home/amortgageinsuran/public_html/ wp-content/themes/schema/functions/plugin-activation.php on line 1045 Everytime I try to may help me please * Moderator [t-p](https://wordpress.org/support/users/t-p/) * (@t-p) * [9 years, 2 months ago](https://wordpress.org/support/topic/fatal-error-theme-activation/#post-8956871) * [@paraima](https://wordpress.org/support/users/paraima/), * If you noticed it’s about 11 months since the OP replied. * If the troubleshooting already posted made no difference for you, then, as per the [Forum Welcome](http://codex.wordpress.org/Forum_Welcome#Where_To_Post), please [post your own topic](http://wordpress.org/support/forum/how-to-and-troubleshooting#postform). * I’m closing this topic Viewing 8 replies - 1 through 8 (of 8 total) The topic ‘Fatal Error – Theme Activation’ is closed to new replies. ## Tags * ["theme activation"](https://wordpress.org/support/topic-tag/theme-activation/) * [fatal error](https://wordpress.org/support/topic-tag/fatal-error/) * [plugin activation](https://wordpress.org/support/topic-tag/plugin-activation/) * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/) * 8 replies * 4 participants * Last reply from: [t-p](https://wordpress.org/support/users/t-p/) * Last activity: [9 years, 2 months ago](https://wordpress.org/support/topic/fatal-error-theme-activation/#post-8956871) * Status: not resolved ## Topics ### Topics with no replies ### Non-support topics ### Resolved topics ### Unresolved topics ### All topics