blockiness refers to really highly compressed works. if you save your art at a really low compression (1-12 scale - and you save it at 3). you'll see little blocks when you zoom in. they look like blocks, that's all they look like. and they won't print that. you'll know it when you see it. zoom in at like 700% and you'll see blocks even on a good save. it's when you can see it without doing anything that's when it's really bad.
I'd love to get into Tec. support. I've sent them multiple messages but get no reply.Am ready to start looking for a new site that cares about it,s customers enough to at least reply. And Oh Ya. forget about a e-mail response from them as well.