If you use text in your design, be sure to convert it into vectorised paths.
An easy way to do this is to outline your text. It will turn text into an vector path.
The font will be fixed and can no longer be altered by programmes used.
Another way can be to use fonts where every letter exist of one single line, or use stencil fonts where bridges have been introduced to connect inner spaces.
For examples click here.
pictures will follow