When I tried to update My OS X10.9.3 to 10.9.4 I got the following error message: OSXUpdCombo10.9.3 - invalid checksum?

Has anyone came across this problem when updating to OS X 10.9.4?

aldo64,
a file’s checksum represents a sort of “signature” — it’s one way to discover whether its contents are exactly as originally created or not. By visiting Apple’s page on the OS X 10.9.3 update, you can see that your copy of the file has a different checksum than the checksum shown there — thus, your copy is not a true copy of the one at the Apple site. You’ll need to delete your copy, redownload the OSXUpd10.9.3.dmg file to your desktop, and then run the openssl command again to check whether its checksum now matches the one on the Apple page. If it does match, then you’ll have a good copy, and you’ll be able to run it.

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