Not too sure what the problem is, but I can offer a few suggestion. The first thing I would try is to open the file with a different program such as 7zip or Izarc. If that doesn’t work, try redownloading the file. Remember, all the file parts have to be in the sam directory in order for you program to unarchive it successfully. I’m afraid I can’t offer any more advise as I never really used winrar before. Hope this helps.
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