I get a similar message when trying to open the official SL viewer or any other viewer I've tried: "Second Life is unable to run because your Video Card Drivers did not install properly, are out of date, or are for unsupported hardware. Please make sure you have the latest video card drivers and even if you do have the latest, try reinstalling them.
If you continue to receive this message, contact the Second Life support portal."
I also got some sort of message while downloading Singularity, saying that the graphics package couldn't be downloaded.
I'll give Alchemy a try. Thanks for the recommendation.