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I have Mac OS X 10.6.4 installed. I tried updating to 10.6.7 using Mac OS Software Updates, but there is a problem with installation.

The problem I face is that every time it restarts downloading from 300 MBs and even if I allow it to download completely it says

Mac OS Update can't be saved

Where is the temporary file created which has the 300 MBs of update saved in it?

What could be wrong?

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up vote 3 down vote accepted

There are (from what I believe) variations of this message. It could be that the integrity of the download could not be verified or there was an error with permissions.

In any way, you can download the combo update manually from Apple, as you can with all other support downloads.

I'd recommend verifying against the SHA checksum after the download.

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