Posts: 119
Member Since: ‎11-23-2008
Message 1 of 3 (209 Views)

Problem installing Photosmart 7520 on Mavericks

I just downloaded Mavericks on my computer and am now attempting to install the software and driver for the PhotoSmart 7520. It downloaded OK, but couldn't be opened. A message appears: Invalid checksum. What does this mean? I need this printer.




HP Support Agent
Posts: 11,331
Member Since: ‎09-03-2013
Message 2 of 3 (181 Views)

Re: Problem installing Photosmart 7520 on Mavericks

Hi Helen,


I see that you are getting the error "Invalid Checksum" when trying to run the install for the printer on Maverick.
I will do my best to assist you with this issue.

Repair the Disk Permissions on the Mac.


On the Apple menu bar, click Go, click Applications and then click Utilities.
Double-click Disk Utility.
Highlight your hard drive/partition on the left.
Click Verify then Repair Disk Permissions.
Restart the computer.
Try and open the download again.
If you are still getting the error, try these steps:

Temporarily turn off the feature to verify the checksum.

The following steps will allow you to temporarily disable this feature:


  1. Open the Disk Utility located in Applications/Utilities.
  2. Go under the Disk Utility menu and select preferences.
  3. Deselect the option to verify checksums.
  4. Try mounting your DMG file.

I would recommend turning this feature back on though after the installation is complete. Also if you notice this happening on additional files it can indicate a problem with your Internet connection.


If you are still having issues then I would download and run the HP Printer Drivers v.2.16.1 to see if you have the same results.


HP Printer Drivers v.2.16.1 for OS X.


If there is anything else that I can help you with just let me know.


Have a great day. Smiley Happy
Thank You.

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Posts: 119
Member Since: ‎11-23-2008
Message 3 of 3 (167 Views)

Re: Problem installing Photosmart 7520 on Mavericks

My friend downloaded the wrong driver. He downloaded Airprint driver. I'm not sure what that is, but I downloaded the correct driver and everything is OK.



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