My first thought is that you are emailing & printing the SOP Blank History Invoice, but the SOP Blank Invoice does not have a template created/assigned yet.
If you go into Reports >> Template Maintenance, then lookup & select each of the two forms (Blank History & just "blank"), are there templates assigned for each?
If there are, perhaps they are not set up as defaults, or are not assigned to the companies and/or customers you need?
Check these couple of things & let me know, then we can dig deeper, as needed.
