Retouch Artists Speedtest - Error message.

[Dinarius]

When I try to start the Retouch Artists Speedtest an error message appears.......

"The command "Image Size" is not currently available."

....and the test stops.

How can I correct this?

Thanks.

D.

ps. For those interested, the test can be downloaded here>

http://retouchartists.com/pages/speedtest.html