I'm trying to add a custom structural member profile to the weldments library but I get an error saying I don't have permission to save to this location.

I'm trying to add it to the path:C:\Program Files\SOLIDWORKS Corp\SOLIDWORKS\lang\english\weldment profiles\ansi inch\rectangular tube

I was able to download .zip files of additional library profiles and add them to this location but it still didn't have the std size I need (you would think a 1 x 2" rectangular tube would be included but it's not)

Is this the correct location or should custom profiles be saved somewhere else?