PDF! command is not working.

Hi,

GUI Details:

File Version: 7500.2.6.157

Patch Level: 6

We are having issues on making the output as PDF whenever we use the code PDF!

Error Message: System Error. Code 1400. Invalid window handle.

I don't know it will help or related but we are using the PDF Complete software for PDF.

What can I do to resolve this?

(We have a work around for this but it is time consuming)

I hope someone can help us.