heather-king when I have tried to update the Buildr Template I can no longer see the module positions in the design view.
Kindly try to re-upload the specific file i.e.\templates\buildr\settings\positions.json from default template folder (unzipped) ensuring that the specific folder along with files are set to writable (Chmod 777 or 755)
Would suggest to also take backup of your current file before performing aforesaid steps, in case rollback required whilst facing any issues e.t.c
If the relative issue still persists, Can you add your admin and ftp details in edit fields in order for us to take closer look.
For reference, You can follow thread post (5 point) procedure.