Download the DPL source code from your Telerik account and try to build the DocumentProcessing_Multitarget project >> AI folder for .NET Framework 4.6.2. The following error occurs: 

Unable to find package Telerik.Licensing.Lib. No packages exist with this id in source(s): C:\Program Files\dotnet\library-packs, Microsoft Visual Studio Offline Packages, nuget.org