Need to install Storyline 1 - InstallShield Wizard throwing CRC error

I have been trying install Storyline 1 on a new machine (too much custom JavaScript to worry about Storyline 2 right now). I found another discussion on the topic that sent me here.

Both the EXE and ZIP files throw CRC errors during the install (though on different files), along the line of "{file} doesn't match the file in the setup's .cab file. The medium from which you are running the setup may be corrupted, contact your software vendor".

Any ideas?

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