In nativeEx-based projects, the general move now is to use either the defined %ProjectTemplates% or %GlobalTemplates% variables for such a task, rather than %ScriptDir%. Using %ScriptDir% places files in the project's folder path which need not be there.
Unfortunately the strategy of handling files has changed a little in the new VPE. Two new folders Temp and Templates are used by the scripts to hold downloaded and personal files (why are personal files called template?). VistaPE scripts hold these files in their own script directory. OK, this might be a cosmetic problem, but I think all scripts should follow the same strategy. And if I'm not mistaken, the XP based projects also use script behaviour like VistaPE.