I just checked and I just realized that I can't run any sample file with Direct RT on the machines with winXP + DirectRT2010.

For instance, if i try to run the modern racism file I get:

Empirisoft executeDRT
15 System.InvalidCastException: Conversion from string ".5" to type 'Single' is not valid. ---> System.FormatException: Input string was not in a corret format. at Microsoft.VisualBasic.CompilerServices.Conversion. ParseDouble(String Value, NumberFormatInfo Number format)
---end of inner exception stack trace---