I've just installed Office 2003 Pro on my laptop with WinXP Pro. I've 4 users defined: Livio, Chiara, Guest and Administratr. Livio has administrator rights too. I've installed Office as Livio. It installed all right and at the end I specified to remove the installation cache files.
Then I logged off and logged in again as Chiara and launched Word. It worked fine but asked for the Office CD, installed some stuff and now office works fine for Chiara too. Same thing for Administrator.
The problem is with Guest. If I log in as guest and launch any office application, I get a dialog with title "Windows Intalller" with a line "Preparing to installing...". After a few seconds it changes to "Please wait while windows configures Microsoft Office Professional Edition 2003", and after a few other seconds another dialog appears saying "Microsoft Office Professional Edition 2003" - "Error 25090. Office Setup encountered a problem with the Office Source Engine, system error -2147024891. Please open C:\Program Files\Microsoft Office\Office11\1033\SETUP.CHM and llok for "Office Source Engine" for information on how to resolve this problem."
This dialog has an "OK" button. If I click OK then it appears again a second time and if I click OK again then Word/Excel starts properly. But when I close it and launch it again, I get the same errors/messages.
I've opened the mentioned help file but didn't find anything useful.
Now I don't understand why this worked for all other users but not for Guest. It looks like Office is trying to find ose.exe (which it must run from the Office CD since I uninstalled the MSOCache), but for some reasons it fails for Guest.
I've tried to remove guest form group Guests and put in group Power Users but I got the same error.
Note that Office XP worked fine for Guest too.