I got this same error at the start of August with my TI Snow. I emailed Access back and forth for a while but the final email was this:
"Dear Maurice,
After speaking with our engineers you simply can click on the "don't show again" tab once the message comes up again. You don't need to worry about this if you're not running into any troubles anymore as of now."
I noticed this when I upgraded the TI software on my Tiger MBP to v3.X (I had been on 2.7.5).
As was suggested by Access, I clicked the "Don't show again" option, and was not troubled by it. I've since put Snow Leopard on the MBP and haven't tried it with the Snow since (I have another machine that the Snow is hooked up to).
My theory (never confirmed by Access) was that the TI v3.X software had extra code added to detect if there were other devices on the root hub, and to display a warning - considering the message knew details about the TI software I figured it had to be generated by it and not by OS X itself.
When there's a non-Beta Snow Leopard compatible version of the TI software available I'll install again on my MBP and see what happens.
Glad to know it wasn't just me that got it though
Hope that helps (if only a little)
Maurice