yeah, that's weird. you can just put the commands into a batch file and run the batch. when I'm just tweaking rules and don't need to see any errors, that's what I generally do. Just put the

java -jar toolbox-sca.jar LEXICON.FILE RULES.FILE OUTPUT.FILE

stuff in a batch.

I'm in Windows 7, can't say I've had any problems with the command line, other than it just not being bash.