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Getting dll error

Oct 25, 2012 at 9:20 PM
I installed the all the webarts using automated scripts. I am getting the error below when I try to use the governance checklist webpart, please help.
Could not load file or assembly 'DevExpress.Data.v12.1.Linq, Version=, Culture=neutral, PublicKeyToken=b88d1754d700e49a' or one of its dependencies. The system cannot find the file specified.
Also, when I click on " request a key", I get Server Error in '/' Application. on the site.