Error activating certain plugins

When I try to activate All-In-One SEO Pack or ANY (I've tried all by now!) caching plugin, the page goes blank - i.e the content of the page empty, except the WordPress bar on the top and the toolbar on the left. No error is displayed. What is wrong? All other plugins are activated and work just fine! Please help!

Topic cache wp-admin plugin-all-in-one-seo errors plugins Wordpress

Category Web

1
answered at

There were mod_security conflicts, which my provider refused to fix for me. Moving to a VPS solved my issue!

1
answered at
  • turn off all the other plugins to see which one causes it
  • turn on debugging in WordPress (debug=true)

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