1. Open or import assembly from another user or location, into some specific local folder (ie, desktop).
2. File > Pack and Go. Add a prefix, etc., prepare for saving to vault.
3. Browse under save to folder to save files to. Get to destination folder (ie, a job folder in the vault)
4. Need one more folder. Press "New Folder" - error message as shown below.
Very annoying as the selection process for clicking through multiple folders to get to the path takes a long time, and why have a "New Folder" button if it doesn't work?