Server Error

e:\Websites\nreauctioneers.co.za\nrepropertypractitioners.co.za\MasterPage.master.cs(37): error CS0102: The type '_MasterPage' already contains a definition for 'ltInjected'

e:\Websites\nreauctioneers.co.za\nrepropertypractitioners.co.za\MasterPage.master.cs(37): error CS0102: The type '_MasterPage' already contains a definition for 'ltInjected'