Thank you for your post.
Can you be a little more specific? That is, what occurred previously when you pressed the button, and what is it doing after Mac OS X 10.6.x was installed?
I have found the fault to be with the font I used - Arial.
with OS10.6, Filemaker 10 will not print the plain Arial font.
I changed the font on my data base to Helvetica and all was well