As per my knowledge ADS origibnation is not through windows.
ADS has problems with special charectors.
Hope this problem will be resolved in next version.
ADS started as a unix program. And it is still a unix program as well as windows. It always looks like a unix port to windows and not a native windows program so a lot of windows features are just not there. No spaces allowed in unix. Since ADS has so much legacy code, I doubt if this will change any time soon.
It is still fun when ever you get a chance to ask the Agilent reps if they can handle the space character when ever they are pitching the new versions. It is just an ASCII character after all.