Mathcad Prime 2.0 installation "an error occurred during the installation of assembly"

Hey everybody,

I am a student out of Central Lee High School in Iowa, and am part of the Real World Design Challenge team at my school. I am trying to install Mathcad Prime 2.0 off of a usb drive onto my Windows Vista. The installation seems to work fine until a text box pops up and says:

An error occured during the installation of assembly 'Microsoft.VC90.CRT.version="9.0.30729.4148".publicKey Token= "1fc8b3b9a 1e18e3b".processorArchitecture="x86".type=win32" Please refer to help and support for more information

this cancels the installation and I am left with nothing. I would really appreciate some help.

Thanks