Is there a full stack trace?
The basic samples are on the doc wiki page: https://sharpcompress.codeplex.com/wikipage?title=Composite%20API%20Examples&referringTitle=Documentation
The unit tests have a lot of scenarios as well: https://sharpcompress.codeplex.com/SourceControl/changeset/view/2f8ce7087d9b#SharpCompress.Test/ArchiveTests.cs
The basic samples are on the doc wiki page: https://sharpcompress.codeplex.com/wikipage?title=Composite%20API%20Examples&referringTitle=Documentation
The unit tests have a lot of scenarios as well: https://sharpcompress.codeplex.com/SourceControl/changeset/view/2f8ce7087d9b#SharpCompress.Test/ArchiveTests.cs