Thank you for using GroupDocs.Comparison for .NET API.
We are sorry to hear that you are facing such issues. Yes GroupDocs.Comparison for .NET API supports .NET 2.0, please click here for more details. Document Comparison API v17.4.0 is recently released with structural improvements and some of old methods are not available in v17.4.0. Please click here to download the latest example code compatible with API v17.4.0 to explore the API features and working, we are also in process to update support material accordingly.
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