I've had problems opening a few of the powerpoints recently. Basically, I can open the file, but some of the slides are missing. when I use QuickLook, I can see that the file is completely intact, just when I open it in Keynote, some of the slides are lost. Here's one solution:
Download OpenOffice from Openoffice.org. Use that to open any problem files (for me, this problem doesn't happen with every file). If you still want to use Keynote, which I do, you just open the file with OpenOffice, then save the file as a .ppt file. Keynote will be able to open THAT file with no hitches.
So basically, you're using OpenOffice to [slightly] reformat the file and make it Keynote-friendly.
Keywords: powerpoint, keynote, dropped slides, missing slides, truncated file, lost slides
Download OpenOffice from Openoffice.org. Use that to open any problem files (for me, this problem doesn't happen with every file). If you still want to use Keynote, which I do, you just open the file with OpenOffice, then save the file as a .ppt file. Keynote will be able to open THAT file with no hitches.
So basically, you're using OpenOffice to [slightly] reformat the file and make it Keynote-friendly.
Keywords: powerpoint, keynote, dropped slides, missing slides, truncated file, lost slides