Issue:
While importing trusses I found a missed truss from a new HMM file that I got from the truss supplier. This error comes up while trying to import the truss
“One or more element ids was not permitted for membership in the Assembly instance. Elements should be of a valid category and should not be a member of an existing assembly. Parameter name: assemblyMemberids”
Solution:
By Design, unless you are an engineer, you are not supposed to move the Trusses. ModelMap Pro is for those who have customized trusses and need to move them. Contact the product provider to discuss how to get the ModelMap Pro module