What platform are you using?
The nuget package should set up the references you need. Does some other project you are referencing also use SharpZipLib.
You might also try the new portable class library based version (not on nuget yet)
https://github.com/ExcelDataReader/ExcelDataReader/tree/f-portable
This does not have a dependency on SharpZipLib.
Please send all future questions to github as we have moved there now
https://github.com/ExcelDataReader/ExcelDataReader/issues
The nuget package should set up the references you need. Does some other project you are referencing also use SharpZipLib.
You might also try the new portable class library based version (not on nuget yet)
https://github.com/ExcelDataReader/ExcelDataReader/tree/f-portable
This does not have a dependency on SharpZipLib.
Please send all future questions to github as we have moved there now
https://github.com/ExcelDataReader/ExcelDataReader/issues