EQ6 & 7 recommend that you put your resolution on your scanner to 72 or 75. I know that not all scanners will allow you to do this. I use PaintShop Pro to do this for me, because of that, but most people don't have that either.
You can go to electricquilt.com and tell them about any error messages you get. Sometimes, they will ask you to send them some information from your EQ, but they are easy to work with, and usually, very fast.