Title: "Functions File is missing!" Last modified: August 21, 2016 --- # "Functions File is missing!" * Resolved [Igor Isaias Banlian](https://wordpress.org/support/users/igor-isaias-banlian/) * (@igor-isaias-banlian) * [12 years, 6 months ago](https://wordpress.org/support/topic/functions-file-is-missing/) * My site does not work at all any more after I upgrade the plugin to version 1.5.1! * On every page the error appears: * “Functions File is missing!” * I had to go back to the previous version (1.1.2)! * Regards, Igor Isaias Banlian * [http://wordpress.org/plugins/wp-optimize/](http://wordpress.org/plugins/wp-optimize/) Viewing 15 replies - 1 through 15 (of 35 total) 1 [2](https://wordpress.org/support/topic/functions-file-is-missing/page/2/?output_format=md) [3](https://wordpress.org/support/topic/functions-file-is-missing/page/3/?output_format=md) [→](https://wordpress.org/support/topic/functions-file-is-missing/page/2/?output_format=md) * Plugin Contributor [Ruhani Rabin](https://wordpress.org/support/users/ruhanirabin/) * (@ruhanirabin) * [12 years, 6 months ago](https://wordpress.org/support/topic/functions-file-is-missing/#post-4294691) * Hi Could you remove the previous version of the plugin .. deactivate and delete and try to install the new one.. I can see the function file is there. Sometimes wordpress do not update it in time. Let me know thanks. * Moderator [Bet Hannon](https://wordpress.org/support/users/bethannon1/) * (@bethannon1) * [12 years, 6 months ago](https://wordpress.org/support/topic/functions-file-is-missing/#post-4294693) * I have the same error. Cannot access the dashboard or site: error shows “Funtions File is missing!” * Moderator [Bet Hannon](https://wordpress.org/support/users/bethannon1/) * (@bethannon1) * [12 years, 6 months ago](https://wordpress.org/support/topic/functions-file-is-missing/#post-4294695) * Ruhani, I just tried your suggestion, and I get the same error message, but this time, it says “Plugin could not be activated because it triggered a fatal error. Functions file is missing!” * Plugin Contributor [Ruhani Rabin](https://wordpress.org/support/users/ruhanirabin/) * (@ruhanirabin) * [12 years, 6 months ago](https://wordpress.org/support/topic/functions-file-is-missing/#post-4294696) * Unfortunately I tried it on 5 of my websites .. none can reproduce this problem.. can you tell me what **wordpress version** and what **server** you are running it on. Beside that .. ftp to the wp-optimize directory and look for a file called` wp-optimize-common.php` .. if this file is missing then wordpress did not correctly updated the files. If it is there, then the server may be adding an extra slash to the file path. _I need to have a bit more info on this._ Thanks for helping me out guys. * Moderator [Bet Hannon](https://wordpress.org/support/users/bethannon1/) * (@bethannon1) * [12 years, 6 months ago](https://wordpress.org/support/topic/functions-file-is-missing/#post-4294697) * I guess it was only rendering site & dashboard inoperable when I was attempting a one-click update with the plugin activated. * Plugin Contributor [Ruhani Rabin](https://wordpress.org/support/users/ruhanirabin/) * (@ruhanirabin) * [12 years, 6 months ago](https://wordpress.org/support/topic/functions-file-is-missing/#post-4294698) * I did the same thing actually.. i am suspecting it is a path issue.. * [flagged](https://wordpress.org/support/users/flagged/) * (@flagged) * [12 years, 6 months ago](https://wordpress.org/support/topic/functions-file-is-missing/#post-4294699) * I’m having the same exact problem after upgrading my plugins from wp-admin * Thread Starter [Igor Isaias Banlian](https://wordpress.org/support/users/igor-isaias-banlian/) * (@igor-isaias-banlian) * [12 years, 6 months ago](https://wordpress.org/support/topic/functions-file-is-missing/#post-4294701) * Ruhani, clearly there is a bug in the current version of the plugin that is causing this error! * Please investigate what might be happening! * Regards, Igor Isaias Banlian * [Andrew Palmer](https://wordpress.org/support/users/conservteacher/) * (@conservteacher) * [12 years, 6 months ago](https://wordpress.org/support/topic/functions-file-is-missing/#post-4294702) * Same problem! This sucks! I can’t get into anything on my site. * Plugin Contributor [Ruhani Rabin](https://wordpress.org/support/users/ruhanirabin/) * (@ruhanirabin) * [12 years, 6 months ago](https://wordpress.org/support/topic/functions-file-is-missing/#post-4294703) * delete the folder if you are having problems accessing site admin.. * [Andrew Palmer](https://wordpress.org/support/users/conservteacher/) * (@conservteacher) * [12 years, 6 months ago](https://wordpress.org/support/topic/functions-file-is-missing/#post-4294705) * Thanks, that allowed me back in to the site. * Plugin Contributor [Ruhani Rabin](https://wordpress.org/support/users/ruhanirabin/) * (@ruhanirabin) * [12 years, 6 months ago](https://wordpress.org/support/topic/functions-file-is-missing/#post-4294706) * I need to apply a patch .. can any one of you guys can help me test it? I am unable to replicate it on any of my site.. but i am sure it is a path issue .. i need at least one of you guys to try a patch out. Once it is confirmed i can apply the patch globally. * [Cygnus III](https://wordpress.org/support/users/nostrodamus/) * (@nostrodamus) * [12 years, 6 months ago](https://wordpress.org/support/topic/functions-file-is-missing/#post-4294721) * I just updated the plugin from the admin panel and now I cannot access anything All I get is Functions+File+is+missing! Please help as I am now totally lost * Plugin Contributor [Ruhani Rabin](https://wordpress.org/support/users/ruhanirabin/) * (@ruhanirabin) * [12 years, 6 months ago](https://wordpress.org/support/topic/functions-file-is-missing/#post-4294723) * Nostrodamus, which version did you update to ? ftp to your host and delete the folder – /wp-content/plugins/wp-optimize .. that will let you into your wp-admin. I have deplyed a possible fix at version 1.5.2 .. let me know if that works. * [markmelch](https://wordpress.org/support/users/markmelch/) * (@markmelch) * [12 years, 6 months ago](https://wordpress.org/support/topic/functions-file-is-missing/#post-4294744) * I had this happen on 3 sites tonight after updating the plugin: * ``` Warning: include_once(__DIR__/wp-optimize-main.php) [function.include-once]: failed to open stream: No such file or directory in /public_html/wp-content/plugins/wp-optimize/wp-optimize-admin.php on line 88 Warning: include_once() [function.include]: Failed opening '__DIR__/wp-optimize-main.php' for inclusion (include_path='.:/usr/lib/php:/usr/local/lib/php') in /public_html/wp-content/plugins/wp-optimize/wp-optimize-admin.php on line 88 ``` * The site is not affected but I cannot access WP Optimize. * I deleted the plugin and FTP’d a fresh copy but I still get this error. Viewing 15 replies - 1 through 15 (of 35 total) 1 [2](https://wordpress.org/support/topic/functions-file-is-missing/page/2/?output_format=md) [3](https://wordpress.org/support/topic/functions-file-is-missing/page/3/?output_format=md) [→](https://wordpress.org/support/topic/functions-file-is-missing/page/2/?output_format=md) The topic ‘"Functions File is missing!"’ is closed to new replies. * ![](https://ps.w.org/wp-optimize/assets/icon-256x256.png?rev=1552899) * [WP-Optimize – Cache, Compress images, Minify & Clean database to boost page speed & performance](https://wordpress.org/plugins/wp-optimize/) * [Frequently Asked Questions](https://wordpress.org/plugins/wp-optimize/#faq) * [Support Threads](https://wordpress.org/support/plugin/wp-optimize/) * [Active Topics](https://wordpress.org/support/plugin/wp-optimize/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/wp-optimize/unresolved/) * [Reviews](https://wordpress.org/support/plugin/wp-optimize/reviews/) * 35 replies * 8 participants * Last reply from: [Ruhani Rabin](https://wordpress.org/support/users/ruhanirabin/) * Last activity: [12 years, 6 months ago](https://wordpress.org/support/topic/functions-file-is-missing/page/3/#post-4294839) * Status: resolved