strange button text on client form

Hi Guys,
I have an interesting client form. In developer the buttons I have on the form are clearly legible, while on the client the buttons look like bar codes.
This only happens on some machines, not all, and the user that sent in the attached document didn’t state which type of machine being used.

It appears to me to be a font problem, but I’m not sure how to solve it.

Anyone seen anything like this?

Thanks
Graham

see attachment

ServoyPic.doc (82 KB)

I think it is a font problem too. I should say: make sure the default font you use is on the client machine. I avoid playing around with other than default fonts to avoid any font problem and x-plat issues…