Block error message.

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When I go to "ADD BLOCK" I get this message:

Fatal error: Cannot redeclare class LibraryFileBlockController in /home/refocu5/public_html/concrete/blocks/library_file/controller.php on line 340

 
mkly replied on at Permalink Reply
mkly
You probably have the block folder twice. Or a renamed folder with the block controller in it as well as the original. Could be either in /blocks/ /concrete/blocks/ /packages/package_name/blocks/ etc

It's reading controller.php from two different places that both have
class LibraryFileBlockController extends BlockController {