Map Suite PocketPC Edition 2.0 Installation Error

A pleasant day to TechyV experts!
Guess I'm the lucky one. Map Suite installed nicely and without problem on my sister's laptop (Windows Vista).
When I ran the installation file on mine, error message popped on screen.
Help please?
I use the exactly same OS by the way.
Thanks ever so much.

Map Suite PocketPC Edition 2.0
The installer has encountered an unexpected error
Installing this package. This may indicate a problem with
This package. The error code is 2869.
OK
