Error using ADOBE READER when adding tesxt in a pdf with : AddTextToPDFFile

When I try to read a PDF generated with the function : AddTextToPDFFile
I get this error in Adobe Reader :

Impossible to find or Create the FONT
WMIDTP+TimesNewRomanPS-BoldMT


And the text I’ve added is a suit of black ball.

But when i open the same file with foxit Reader or IrfanView (+Ghostscript) it
work perfectly.

Is there a fix for that ?

In advance tanks a lot