I don't recall seeing this error before. You obviously have enough memory on the card.
Are you using the latest FireStream driver? To troubleshoot, you may want to uninstall the SDK and the driver, then re-install the driver and the SDK in that order.
What OS are you using? The next step in troubleshooting will be to try on a fresh machine with a fresh install of a supported OS.
The driver was the latest, uninstalling and reinstalling on Fedora 9 32-bit did not help. There was the same error.
Installing drivers and SDK on clean CentOS 5.2 64-bit helped and everything works fine.