I would also say it looks to be an SSE problem. I have an AMD Thunderbird 1.333, and get the same errors.
There's an Adobe document that describes errors when running Adobe Premiere, and has the same error code (0xc000001d).
I've been searching around all morning for some sort of software emulation of those instructions. But that would be quite disgusting. It would be nice, if the engine doesn't rely on them too heavily, to have alternate routines for those of us with Thunderbirds. But I would totally understand if there was no patch. We are using rather old processors.
My specs, for reference:
Athlon Thunderbird 1.333 GHz
Radeon All-In-Wonder 9600
512 MB RAM
Win XP SP2
Onboard (nForce2) audio