I haven't had this problem before, but I haven't used SMATH in a few months. I am currently running version 0.99 (build: 7822).

I am able to set up a header with an image, and several text boxes, some text boxes are smart like "current date" and "page X/Total".

However, once I save the file, close out of SMATH, and reopen the file, the header is GONE. Does anyone have an idea why the header disappears?

Just found the fix...

I had inserted areas and separators incorrectly. They were overlapping each other and they must have been affecting the header copies on each page.

Hope this helps someone in the future! I spent a few hours debugging this.