Welcome to the forum.
As our fellow forum member David Maudlin would suggest,
You should add a Signature to your Profile (click the Profile button near the
top of this page) with your ArchiCAD version and operating system
(see mine for an example) for more accurate help in this forum.
The name of the macro in the error message you quote is incomplete
because it should have a version number at the end of the name.
Do a search using the key word wa_trim_us and you will find many
threads concerning this particular macro and how to get it to work.
Peter Devlin
