Installing Altiverb – “Invalid checksum” error when unzipping
If you come across an “Invalid checksum” error when trying to open the zip file you downloaded when you bought Altiverb, this means that the unzipper could not confirm that the entire contents of the zip file were present. This is likely to be caused by a slow or spotty internet connection. If you’re using wireless, try plugging into an ethernet connection.
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