I'm getting the following error message when trying to install Avid Studio ToolKit 5.6.4

Error Code: -5003 : 0xb7
Error Information:
>SetupDLL\SetupDLL.cpp (950)
pAPP:AvidDIORuntime
PVENDOR:Avid Technology
PGUID:C0F62AFB-ABC2-4979-B21B-148EEEA2B6BD
$11.50.0.42618

I do have Avid Xpress Pro V5.7.2 installed.

WinXP SP2

Intel Quadcore 6600

Asus Maximus Extreme

2GB DDR3

02 500GB ATA HD

ATI 2600HD 512MB DDR3

Could someone let me know what do I have to do to get this fixed/working...???

TIA...!!!!