Some weird characters are passed to the CS2D console somehow. CS2D tries to parse them but of course it can't because there are no commands named like that.
Are you using Lua scripts? If yes make sure they are saved with a proper encoding (ANSI ASCII or UTF-8 without BOM). Also check for parse calls and make sure that only valid data is passed in.
If you're not using Lua you should check all your config files in the sys folder and make sure that they are not damaged and contain proper content.