Office Source Engine error: Error 25090. Office Setup encountered a problem with the Office Source Engine, system error: -2147024703.

It happened while add another user into Windows Xp system, new user have office program available yet cannot perform any office program.

Translation:
The Office Source engine (Ose.exe), which gets copied to your hard drive during Office installation, and which copies additional Office 2003 installation files from the CD to your computer when you modify your setup, has somehow become damaged or corrupted. Without a properly functioning Office Source Engine, you can’t change anything about your Office setup.

Solution:
If you’re lucky, you’ll be able to solve the problem by recopying Ose.exe from your Office CD. Insert the CD into your CD/DVD-ROM drive and use My Computer to navigate to the FilesSetup folder on the CD.