I\'m using the following winrar command line to create zip archives:
rar.exe a -df -ep -ag[yyyyMMddhhmmss] -ms[txt] C:\\MyZipFile.zip C:\\tmp\\MyFiles*.txt
Make certain you are using WinRAR.exe and not Rar.exe.
If you are using the command line to do this make sure you type:
winrar a -afzip c:\test.zip c:\test.csv
not:
a -afzip c:\test.zip c:\test.csv
It works for me. I also got it to work in SSIS.