Stack Underflow from Mainframe Application

[stateprog]

I must integrate an image into documents created by a mainframe application written in Model 204 dbms. I have uploaded postscript code that creates a watermark image in the center of each printed page. It's a small image, a round seal that's 2.25 inches in diameter. I can print out one or two pages, sometimes up to seven pages print correctly. Then I crash with a Stack Underflow error. I am at a loss as to how to correct this.