the "true :" in the new line seems to be parsed as a goto label in this case. The same happens in TextMate. If you enter something that is not a valid goto label, it works fine.

Yes, this is a bug in 1.0.

It will be fixed in the next update. 

There's already an option to show tab characters. Spaces are currently not shown.

This sounds like a sandboxing error. Do you get see an error message in the Console app?

Thanks, I'll see what I can do.

You can just use the regular Mac OS X Dropbox client and save files in your Dropbox folder. Am I missing something?