i was getting gibberish because during the {Rnd.1.8} i had wrote {Rnd .1 8.}
This is where the history window can come in handy (or the log file).
I created your command again using the incorrect parameter as you did: {Rnd .1 8.}
See the attached. When you focus the main window, look at the history window and hover your mouse over the red item you can see that there is a problem with the parameter... it is expecting an integer and not getting one. This would be a clue that you formated the random variable string incorrectly. At the very least you should check to see if there are actions in your macro that are generating errors (and mention it when seeking support).
Thanks for the heads up about download.com
I will see about getting them to update to the latest version.