This problem showed up a few months ago and didn't relate to an OS update--it started after I deleted a bunch of files on my system as my wife stopped using the computer and I did. Basically, most programs would not open--they would show up briefly in the dock, then disappear. This included Office applications, the Printer Setup Utility, Endnote, and just about anything except iLife and Apple applications. After an OS update, Office started working again, but Endnote, the Printer Setup Utility, and other applications won't work. DarwiinRemote won't work either, which makes me wonder if it's Darwin apps specifically that don't work (if that even makes sense).
I should also mention that my computer crashes if the print window shows up after I hit cmd-p and it crashes if I try to open System Profiler.
Can anyone help? Many thanks!
iBook G4 800mhz,
Mac OS X (10.4.8)