A simple copy and paste of the text in the window would have been fine. It looks like KoLMafia isn't finished logging in before you are entering the SVN command.
One thing to try would be to watch the gCLI window and make sure it turns green before trying anything. Then open the relay browser from the "General" menu and run one adventure through the browser. If that is successful then try the SVN command in the gCLI.
After Battle: The Kloop does a foxtrot, a jig, and a waltz, / And it's wondrous enough to make up for its faults.
You acquire an item: blackberry
You gain 48 Muscleboundness
You gain 21 Wizardliness
You gain 27 Cheek
I guess that if you run "svn list" you get nothing as well?
Do you have a /svn-directory in your Mafia-folder? Is the Mafia-folder somewhere outside of program files?
It appears as if the "svn checkout"-command failed which could happen if Mafia is not allowed to create folders in the folder it is located.
That could be it. If you are running as a normal user in Windows Vista, 7, or 8 and KoLMafia is installed in a protected location: the Program Files directory for example. Then you will be unable to write to that location.