Trying to Install Game Download - error

I purchased a game download from Amazon for my new iMac - Call of Duty 4. I am getting the following error when I try to install:

The following disk images couldn't be opened

CallOfDuty4.dmg - invalid checksum


I have deleted everything and re-downloaded and tried to install this game several times. Each time it stops midway through the download and gives me an error message, but once I double click on the installer, it resumes and finishes the download, but once I try to install, I get the message above.

Any way to fix this problem? I tried calling Amazon's help line, but they really couldn't help. They have offered a refund, but I got a great deal on this game - $9.99. I would rather try to get this one to work.

justperry said:

Invalid checksum means it is not 100%, so data is somewhere corrupted.

BUT, I had several .DMG which I could not open on my new OS (Bought a Mini 2 weeks ago) but when I transferred them to my Powerbook on 10.5.8 they all opened, I then transferred the App and had no troubles with the Apps.

I think in your case though it is corrupted because you got an error halfway.
Try downloading on another computer and transfer it.

Click to expand...

Could I download to my Windows PC and then transfer it? I don't have another mac.

That makes sense. I could try that and then just move it over ethernet.

Thanks! I'll let you know if it works.

This is not working because it downloads a dmg downloader file first. I can't run this file to do the actual download on Windows.

Any other ideas?

Thanks. I was actually able to get it to work by fixing my permissions and re-downloading it again. This was a tip on the MacRumors guides for when downloads are not working correctly.

This was a download directly from Amazon so I don't know if a download manager would work. I will try iGetter next time.

Thanks for the help!

Consultant said:

Contact Amazon for support.

Click to expand...

First thing I did. Didn't help. They didn't know what was going on. They just offered a refund.