When using the New Seam Project Wizard the Project name with a space in it was copied into the Package name without escaping or changing out the space to an underscore. I guess this mean that valid characters need to be checked for in the creation of the package name or the project?. Also it would be nice if the First Capital letter Capitalization was made to be lower case. See the attached screen shot. Not sure what the rules are for package naming or what conventions are used, but they should be injected inserted for you automatically.