Well yes I've encountered a similiar problem. It wasn't feasible to download a 117 meg file from software update via dial up so I downloaded the 55 meg upgrade from Apple's site. after download completed I disconnected from the net booted off my other disk ran verify permissions, rebooted back into the main drive double clicked the downloaded upgrade and was immediately presented with a dialogue stating 'Mac os 10 update error -536870208 '.
After several attempts at this I gave up and went back to surfing the net and in the process downloaded a few small freeware apps and to my surprise every one of those downloads ran into the same problem.
This morning I've spent the last three or more hours searching through pages and pages of Apple Support database and have found nothing that is even remotely relevant.
At the moment I'm none to happy at the prospect of doing a complete reinstall.
Although I read thru about 50 pages of file headings I never actually found that error code. I was hoping simply to type in something like 'error -536870208 '
but that gave results no where near that number, so I tried several keywords like disk copy errors and got back about 2.000 pages, got fed up after looking at about 50 pages, so here I am
