Splinter Cell 4 demo problem

Hello,

I just downloaded the Splinter Cell Double Agent demo, and unfortunately, it crashes every time I try to run it, here is what happens:

Once I double click on the game's icon, and let the companies' logos fly by (and sometimes it crashes during this), but once it crashed while I was loading the first mission of the demo -- but it's always the same error.

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Here's my two error messages:

1. Splinter Cell 4 Crash window pops up and says: "try vortex shader"

then

2. a Windows error window pops up and says this:

Microsoft Visual C++ Runtime Library

Runtime Error!

Program: DoubleAgentDemo\SCDA-Offline\system\SpinterCell4.exe

This application has requested the Runtime to terminate it in unusual way. Please contact the application's support team for more information.

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At first, before running the game, the game scanned by hardware for requirement purposes, and it told me that my Shader was version 2.0, and I needed 3.0. Now i have an ATI x850, so I downloaded the newest driver, and I'm sure I have version 3.0 now, but it still did not work.

Please help me out here, if you know what's going on.

They don't lose money from illegal copies.

At least I don't plan on using the game as if it were bought from the store if I downloaded it, I use full game downloads to try the game if there is no demo, such as CSS.

CSS is a good game, but it lacks content IMO, BF2 us a much better game if you like vehicles.

But back on subject, I think that in a way it's good to upgrade, basically this is telling us that more games will be shader 3.0 and that it will be a necessity, but this change won't be often as you can see.

I am in need of a new video card as it is, so I will be sure to get shader 3.0 when I do.

But it really sucks when a game needs so much to run, warrock has the ability to run on 64mb integrated, but also be able to set settings so high that it lags a 9600PRO 256mb 128bit 4 pipe card, why not other games?

Well I paid $80 for this 9600pro, and there are so many games that I can play, I'm not going to get a new card just to try a demo.

But I do plan to upgrade to max out BF2, and perhaps FEAR if I didn't get those damn invalid game assets errors.