I am trying to save a new weldment profile, but it says i do not have permission.
sounds like you do not have write access to the weldment folder.
1. you can get yout IT departmentto sort you out.
2. You can create a new folder. You'll need to follow the structure outlined here 2014 SOLIDWORKS Help - Weldments - File
Location for Custom Profiles
and you'll need to add it to System options>File Locations>Weldment Profiles
Retrieving data ...