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[3.1.0] Twitter "Fatal error: Cannot redeclare class OR return to log in while trying to register

This error is caused because your PHP installation makes use of the PECL 'oAuth' extension which is not compatible with the oAuth version Twitter requires and some class names clash.

To fix, download the zip and upload over the copy on your server.

Zip: http://www.invisionp.../310patches.zip

Blank page even after uploading the patch?
If you are still getting a blank page even after uploading this patch above please check your Twitter application settings and be sure that the "Application Type" is set to "Browser".


Developer Docs · Error Codes