The thing is, that if you watch the file download, one moment you will have downloaded 100% of the file then you blink and oops, the meter says that it's only 89% downloaded.
I guess it is corrupt... It usually happens with pdfs, and there usually is only one source, maybe three. What's weird is that sometimes you'll have no problem with corrupt files, and other times- when its a rare one? - you'll just have that maddening cycle.
The bad thing is that, with these pdfs you often can't open the partial file AT ALL....
No such bad luck with this one, it's like I've got everything but the cover photo! Thanks for your help.