Aha! One of the layers did have reduced opacity. I've resaved it. Hopefully the third time's the charm.

Suv, thank you for the information! I did fill the vector paths, so that must be the issue.

Is there any way I can save the document without the fill being rasterized? If I delete the fill and save, I just end up with a blank-looking .eps that I'm not sure would be of use to anyone. Hmm.

Okay, I did manage to solve the first problem of saving the file in .eps format. I had to delete the .png element from each layer. I'm not sure exactly why... for my previous two designs, I had similarly opened a pixel graphic, traced it, and saved it as an .eps with no problems. Unfortunately, acco...

I'm new to Inkscape and to vector graphics in general, so apologies in advance if this is an Inkscape 101 question. I've searched the forum and read through the "How do I open/save this filetype?" thread, but I haven't found an answer. I'm using Inkscape to vectorize a few pixel designs fo...