Problem with the downloaded zip file

Hello,

I've downloaded the "MED-100WIN-CD-390_M070_Win32-64" zip file, twice, from the website url https://www.ptc.com/appserver/auth/it/esd/academicFree.jsp . I face the same problem once again. The zip file is said to be incomplete. Here is an image of it when i try to extract it.

Please help me with it.

Thank you