Title: error activating plugin Last modified: August 18, 2016 --- # error activating plugin * [gaebe](https://wordpress.org/support/users/gaebe/) * (@gaebe) * [20 years, 2 months ago](https://wordpress.org/support/topic/error-activating-plugin/) * I have upgraded to WP2.01 and when i try to activate or deactivate plugin, I get this: * Fatal error: Call to undefined function: check_admin_referer() in C:\Inetpub\ wwwroot\mt\vowelsystem\wp-admin\plugins.php on line 5 * Can someone tell me how to fix it? Thanks. Viewing 15 replies - 1 through 15 (of 25 total) 1 [2](https://wordpress.org/support/topic/error-activating-plugin/page/2/?output_format=md) [→](https://wordpress.org/support/topic/error-activating-plugin/page/2/?output_format=md) * [vkaryl](https://wordpress.org/support/users/vkaryl/) * (@vkaryl) * [20 years, 2 months ago](https://wordpress.org/support/topic/error-activating-plugin/#post-331701) * Um. Are you running this on your own machine? Otherwise, why do you have a hard drive addy (C:) in there? * Thread Starter [gaebe](https://wordpress.org/support/users/gaebe/) * (@gaebe) * [20 years, 2 months ago](https://wordpress.org/support/topic/error-activating-plugin/#post-331703) * No, my blog is on weblogs.us. * [vkaryl](https://wordpress.org/support/users/vkaryl/) * (@vkaryl) * [20 years, 2 months ago](https://wordpress.org/support/topic/error-activating-plugin/#post-331705) * Oh yeah. You’re the guy who’s redirecting, right? That’s as I believe was said previously, A MAJOR PITA. WP isn’t happy with redirects. * Maybe podz or whooami will have some idea later. I have never had any luck with redirects, so anything I offer will be specious at best. Sorry. * Thread Starter [gaebe](https://wordpress.org/support/users/gaebe/) * (@gaebe) * [20 years, 2 months ago](https://wordpress.org/support/topic/error-activating-plugin/#post-331707) * redirecting? * [vkaryl](https://wordpress.org/support/users/vkaryl/) * (@vkaryl) * [20 years, 2 months ago](https://wordpress.org/support/topic/error-activating-plugin/#post-331710) * From the uni addy to the other one? Wasn’t that you? If not sorry – been a long week…. * [superjux](https://wordpress.org/support/users/superjux/) * (@superjux) * [20 years, 2 months ago](https://wordpress.org/support/topic/error-activating-plugin/#post-331711) * Vkaryl by chance would you help a very frustrated person who just upgraded to 2.0.1 and now is having everything freak out? Please? 🙂 * Thread Starter [gaebe](https://wordpress.org/support/users/gaebe/) * (@gaebe) * [20 years, 2 months ago](https://wordpress.org/support/topic/error-activating-plugin/#post-331712) * I haven’t got any redirect as far as i know, i’ve always entered the vowelsystem. weblogs.us as my address. * [vkaryl](https://wordpress.org/support/users/vkaryl/) * (@vkaryl) * [20 years, 2 months ago](https://wordpress.org/support/topic/error-activating-plugin/#post-331713) * Well, I will if I can superjux. What problem are you having? Have you already posted about it? If so, if you just post back with the thread addy, I’ll have a read and see – I haven’t upgraded to 2.0.1 myself, and I may not since the stuff they “fixed” isn’t anything I need, want, or use…. but some of the problematics are similar to stuff that happened with 2.0…. * [vkaryl](https://wordpress.org/support/users/vkaryl/) * (@vkaryl) * [20 years, 2 months ago](https://wordpress.org/support/topic/error-activating-plugin/#post-331714) * gaebe – must have been someone else, sorry. So is “vowelsystem.weblogs.us” your host then? * Thread Starter [gaebe](https://wordpress.org/support/users/gaebe/) * (@gaebe) * [20 years, 2 months ago](https://wordpress.org/support/topic/error-activating-plugin/#post-331715) * it’s my blog address. * [vkaryl](https://wordpress.org/support/users/vkaryl/) * (@vkaryl) * [20 years, 2 months ago](https://wordpress.org/support/topic/error-activating-plugin/#post-331717) * Okay, I’m confused – isn’t that a hosted setup? If you’ve got a hosted blog, how are you upgrading? * [superjux](https://wordpress.org/support/users/superjux/) * (@superjux) * [20 years, 2 months ago](https://wordpress.org/support/topic/error-activating-plugin/#post-331718) * Awesome, thank you! * 1. I recieved this error when trying to access Options–Sparm Karma 2. I activated SK 2.1, the most recent plugin. * > Cannot load spamkarma2. * 2. when I go to manage–backup, I get this error: * > Fatal error: Cannot redeclare class wpdbbackup in /home/superjux/public_html/ > wordpress/wp-content/plugins/wp-db-backup.php on line 23 * 3. when i activate Akismet and try to enter my API key, I get this: * > Fatal error: Cannot redeclare ksd_config_page() (previously declared in /home/ > superjux/public_html/wordpress/wp-content/plugins/akismet/akismet.php:14) in/ > home/superjux/public_html/wordpress/wp-content/plugins/akismet/akismet.php > on line 13 * Any help is much appreciated! * Also, these problems only started when I upgraded from 2.0. The 1.5 to 2.0 upgrade was realively painless. * Hilary * Thread Starter [gaebe](https://wordpress.org/support/users/gaebe/) * (@gaebe) * [20 years, 2 months ago](https://wordpress.org/support/topic/error-activating-plugin/#post-331720) * I upgraded with ftp. * [vkaryl](https://wordpress.org/support/users/vkaryl/) * (@vkaryl) * [20 years, 2 months ago](https://wordpress.org/support/topic/error-activating-plugin/#post-331721) * I hate to tell you this…. I don’t use ANY of those plugins, so I have practically no idea what to tell you. * For the backup thing, just make sure if you insist on using it that your wp-content folder is set permitted to 777. You don’t need the plugin really, all you need to do is use phpmyadmin through your host control panel to get db backups. * Only thing I can think is that there are conflicts between all of them. You can try deactivating them all, then activate sk first, then akismet, then check the permissions on wp-content, make sure they’re 777, then activate it. If you still get errors, repeat above procedure in different combinations until you’ve tried them all. * And you probably want to deactivate ALL your other plugins before you start on this…. * I really do apologize; this is one of the areas I’m not ever going to be much use on I’m afraid. * Tell you what, give the deactivate etc. a try, and report back, but start a new thread, okay? And it’s pretty late for me already, so if I don’t catch up to you before morning I’m not ignoring you – I WILL check up tomorrow! * [superjux](https://wordpress.org/support/users/superjux/) * (@superjux) * [20 years, 2 months ago](https://wordpress.org/support/topic/error-activating-plugin/#post-331723) * Thanks, will do! Viewing 15 replies - 1 through 15 (of 25 total) 1 [2](https://wordpress.org/support/topic/error-activating-plugin/page/2/?output_format=md) [→](https://wordpress.org/support/topic/error-activating-plugin/page/2/?output_format=md) The topic ‘error activating plugin’ is closed to new replies. ## Tags * [api](https://wordpress.org/support/topic-tag/api/) * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/) * 25 replies * 5 participants * Last reply from: [cnc137](https://wordpress.org/support/users/cnc137/) * Last activity: [20 years, 2 months ago](https://wordpress.org/support/topic/error-activating-plugin/page/2/#post-332238) * Status: not resolved ## Topics ### Topics with no replies ### Non-support topics ### Resolved topics ### Unresolved topics ### All topics