Cannot install iWork trial

Question

Please help. I cannot install the iWork trial. I deleted the Microsoft Office trial when I got my computer, but now I need to make a presentation for school. After reading that keynote can export in PPT format, I decided to install the trial. But it will not let me.
This is the message I get:

Answer 1

The iWork Tour is a Keynote file, so it won't play if the software is not installed (OmniOutliner may be OS X's "best guess" as to what to use, since the proper app isn't available). In other words, the fact that it doesn't run doesn't tell us very much.
The error message also isn't particularly enlightening, unfortunately, although you may be right that the disc is damaged in some way, or there is some other problem with your system. As a shot in the dark, you might try opening Disk Utility (in your Applications folder, in Utilities), and run Repair Permissions on your hard drive -- there's an outside chance this might fix things. You might also use the same app to run Verify Disc on the iWork disc, and see if it reports any problems, although this would only be diagnostic, as any problems detected couldn't be repaired (since the disc is not writable).
If you have a Mac dealer near you (or a friend with a newish Mac), your best bet might be to go to them and see if they would install a trial version of iWork for you (or if they have a trial disc you could borrow). There shouldn't be any legal issues with this, since all you are asking for is the same thing that came with your Mac originally. Unfortunately, I don't believe that you can download the trial version online -- only the paid version (through the Apple Store) appears to be available.