If you create groups on any figures in Propack and save them to the library. Propack will create a new obj for your figure to reference and will place this in the same folder that your new figure is saved in...this new obj will have your new groups and new materials in it. From your last message, it created an obj called woman1.obj. Check that path for that obj file (RuntimelibrariescharacterRick's Models). If it's missing, then that's what the problem is.