Hi.help please.

Dotday

Hi there.
I am very new to machine embroidery and have really enjoy what I've managed to do so far. The thing I am struggling with is when I have downloaded patterns and put them on my USB stick to put in the machine the illustration on the LCD display is just unrecognisable, it's just a blob at times. I have a brother innovis.is this a problem on all machines.
Hope you can help.
Thanks