The default 'Workspace' for CrossUI files is the XUIWorkSpace folder within the CrossUI Install.
If you are using XaMPP or WAMP with localhost the files need to be run within these programs.
CrossUI workspace can be moved to make this easier
Enter the new workspace folder. I have mine set to a CrossUI folder in the htdocs folder of xampp.
You can then run files using localhost/crossui/projectname